A Preliminary Check-list of the Algae of Ireland

Michael D. Guiry

Ryan Institute NUI Galway September 2019

i Introduction The present check-list is an initial attempt to provide an up-to-date list of the current names for freshwater, marine and terrestrial (including aerophytic) algae of Ireland. The list is extracted from the distributional data in AlgaeBase (https://www.algaebase.org) as of September 2019, and each name and its source is traceable on line there. Some 2879 current species names are presently included. Taxa at the subspecies, varieties and formae level are not provided. The list is current as of September 2019. Nine phyla/divisions are included, eight of them from the Eukaryota and one (Cyanobacteria) from the Prokaryota.

Table 1. Included taxa. Phylum Species General name(s) Habitat Estimated included (Marine, completeness Freshwater, (%) Terrestrial) Bacillariophyta 1065 Diatoms M/F/T 50 Charophyta 639 Charophytes F 80 Desmids Chlorophyta 300 Green algae M/F/T 60 Cryptophyta 1 Cryptophytes F ? Cyanobacteria 221 Blue-green algae F/M/T 70 Glaucophyta 1 Glaucophytes F ? Miozoa 55 Dinoflagellates M/F 25 Ochrophyta 238 Ochrophytes; M/F/T 80 Tribophytes; brown algae; seaweeds Rhodophyta 359 Red algae, seaweed M/F 90 Total 2879

Recent lists exist for: desmids (John, Williamson & Guiry 2011) and seaweeds (Guiry 2012), and for diatoms by Carter in Wolnik & Carter (2014). The final list is likely to exceed 5000 species, or about 10% of the world’s species of algae.

Poor coverage is apparent for diatoms, some green algae, Cryptophytes and Glaucophytes, and dinoflagellates.

The list is arranged in alphabetical order within phyla, classes, orders, families and genera.

References Guiry, M.D. (2012). A catalogue of Irish seaweeds. pp. [1]-250, 1 pl. Ruggell: A.R.G. Gantner Verlag K.G. John, D.M., Williamson, D.B. & Guiry, M.D. (2011). Catalogue of the desmids (Streptophyco- phyta, Zygnematophyceae, Zygnematales) of Ireland. Occasional Papers National Botanic Gardens Glasnevin Dublin 15: 1-83. Wolnik, L. & Carter, R.T. (2014). Diatoms Ireland http://www.diatomsireland.com.

ii M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

BACILLARIOPHYTA BACILLARIOPHYCEAE BACILLARIALES Bacillariaceae BACILLARIA J.F.Gmelin paxillifera (O.F.Müller) T.Marsson brackish CYMBELLONITZSCHIA Hustedt diluviana Hustedt freshwater DENTICULA Kützing elegans Kützing freshwater kuetzingii Grunow freshwater tenuis Kützing freshwater HANTZSCHIA Grunow amphioxys (Ehrenberg) Grunow freshwater/terrestr marina (Donkin) Grunow marineial spectabilis (Ehrenberg) Hustedt marine/freshwater virgata (Roper) Grunow marine vivax (W.Smith) Grunow freshwater NITZSCHIA Hassall acicularis (Kützing) W.Smith marine/freshwater acula (Kützing) Hantzsch freshwater amphibia Grunow freshwater angularis W.Smith marine/freshwater bilobata W.Smith marine brebissonii W.Smith freshwater bremensis Hustedt freshwater brevissima Grunow freshwater communis Rabenhorst freshwater commutata Grunow marine/freshwater denticula Grunow freshwater dissipata (Kützing) Rabenhorst freshwater dubia W.Smith marine/freshwater fasciculata (Grunow) Grunow brackish filiformis (W.Smith) Van Heurck brackish fonticola (Grunow) Grunow freshwater frustulum (Kützing) Grunow marine/freshwater gracilis Hantzsch freshwater hantzschiana Rabenhorst freshwater harderi Hustedt freshwater heufleriana Grunow freshwater homburgiensis Lange-Bertalot freshwater hustedtiana Salah marine ignorata Krasske freshwater inconspicua Grunow freshwater insignis W.Gregory marine kuetzingiana Hilse marine lanceolata W.Smith brackish lauenburgiana Hustedt freshwater linearis W.Smith marine/freshwater longissima (Brébisson) Ralfs marine martiana (C.Agardh) Schütt marine

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minutissima W.Smith freshwater nana Grunow freshwater palea (Kützing) W.Smith freshwater paleacea (Grunow) Grunow freshwater paleaeformis Hustedt freshwater palustris Hustedt freshwater perminuta Grunow freshwater/terrestr pilum Hustedt freshwaterial pusilla Grunow freshwater recta Hantzsch ex Rabenhorst marine/freshwater rectiformis Hustedt freshwater sigma (Kützing) W.Smith brackish sigmoidea (Nitzsch) W.Smith freshwater sinuata (Thwaites) Grunow marine/freshwater spathulata Brébisson ex W.Smith marine tenuis W.Smith freshwater terrestris (J.B.Petersen) Hustedt freshwater thermalis (Ehrenberg) Auerswald freshwater umbonata (Ehrenberg) Lange-Bertalot marine/freshwater vacua Hustedt freshwater PSAMMODICTYON D.G.Mann constrictum (W.Gregory) D.G.Mann marine panduriforme (W.Gregory) D.G.Mann marine PSEUDONITZSCHIA H.Peragallo australis Frenguelli marine delicatissima (Cleve) Heiden marine dolorosa Lundhlom & Moestrup marine fraudulenta (Cleve) Hasle marine multiseries (Hasle) Hasle marine pseudodelicatissima (Hasle) Hasle marine pungens (Grunow ex Cleve) Hasle marine seriata (Cleve) H.Peragallo marine subpacifica (Hasle) Hasle marine TRYBLIONELLA W.Smith acuminata W.Smith marine acuta (Cleve) D.G.Mann marine angustata W.Smith marine apiculata W.Gregory marine circumsuta (Bailey) Ralfs marine compressa (Bailey) Poulin marine debilis Arnott ex O'Meara marine granulata (Grunow) D.G.Mann marine hantzschiana Grunow marine/freshwater hungarica (Grunow) Frenguelli brackish levidensis W.Smith marine navicularis (Brébisson) Ralfs marine perversa (Grunow) D.G.Mann marine/freshwater plana (W.Smith) Pelletan marine punctata W.Smith marine/freshwater victoriae Grunow marine COCCONEIDALES

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Achnanthidiaceae ACHNANTHIDIUM Kützing affine (Grunow) Czarnecki freshwater cryptocephalum Nägeli ex Kützing freshwater exile (Kützing) Heiberg freshwater lineare W.Smith freshwater minutissimum (Kützing) Czarnecki freshwater pusillum (Grunow) Czarnecki freshwater pyrenaicum (Hustedt) H.Kobayasi freshwater trinode Ralfs freshwater EUCOCCONEIS Cleve ex F.Meister austriaca (Hustedt) Lange-Bertalot freshwater depressa (Cleve) Lange-Bertalot freshwater flexella (Kützing) Meister freshwater laevis (Østrup) Lange-Bertalot freshwater quadratarea (Østrup) Lange-Bertalot freshwater KARAYEVIA Round & L.Bukhtiyarova ex Round clevei (Grunow) Bukhtiyarova freshwater kolbei (Hudtedt) Bukhtiyarova freshwater laterostrata (Hustedt) Bukhtiyarova freshwater ploenensis (Hustedt) Bukhtiyarova freshwater suchlandtii (Hustedt) Buktiyarova freshwater KOLBESIA Round & Bukhtiyarova ex Round kolbei (Hustedt) Round & Bukhtiyarova ex Fourtanier & Kociolek freshwater ploenensis (Hustedt) Round & L.Bukhtiyarova ex Round marine LEMNICOLA Round & Basson exigua (Grunow) Kulikovskiy, Witkowski & Plinski freshwater hungarica (Grunow) Round & Basson freshwater rostellata (Cleve-Euler) Chudaev freshwater PLANOTHIDIUM Round & L.Bukhtiyarova delicatulum (Kützing) Round & Bukhtiyarova ubiquitous dispar (Cleve) Witkowski, Lange-Bertalot & Metzeltin freshwater ellipticum (Cleve) M.B.Edlund freshwater hauckianum (Grunow) Bukhtiyarova freshwater lanceolatum (Brébisson ex Kützing) Lange-Bertalot freshwater rostratum (Østrup) Lange-Bertalot freshwater PSAMMOTHIDIUM L.Buhtkiyarova & Round abundans (Manguin) Bukhtiyarova & Round freshwater/terrestr altaicum (Poretzky) Bukhtiyarova freshwaterial didymum (Hustedt) Bukhtiyarova & Round freshwater helveticum (Hustedt) Bukhtiyarova & Round freshwater hustedtii (Krasske) S.Mayama freshwater lacus-vulcani (Lange-Bertalot & Krammer) L.N.Bukhtiyarova freshwater marginulatum (Grunow) Bukhtiyarova & Round freshwater obliquum (W.Gregory) Poatapova freshwater pseudoswazii (J.R.Carter) L.Bukhtiyarova & Round freshwater subatomoides (Hustedt) Bukhtiyarova & Round freshwater SKABITSCHEWSKIA Kuliskovskiy & Lange-Bertalot borealis (A.Cleve) Lange-Bertalot & Kulikovskiy freshwater oestrupii (A.Cleve) Kuliskovskiy & Lange-Bertalot freshwater peragalloi (Brun & Héribaud-Joseph) Kuliskovskiy & Lange-Bertalot freshwater

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Cocconeidaceae ANORTHONEIS Grunow excentrica (Donkin) Grunow marine CAMPYLONEIS Grunow grevillei (W.Smith) Grunow & Eulenstein marine COCCONEIOPSIS Witkowski, Lange-Bertalot & Metzeltin wrightii (O'Meara) Witkowski, Lange-Bertalot & Metzeltin marine COCCONEIS Ehrenberg arraniensis Greville marine brundusiaca Rabenhorst freshwater clavigera O'Meara marine coronata T.Brightwell marine diaphana W.Smith marine disculus (Schumann) Cleve freshwater distans W.Gregory marine/freshwater grantiana Greville marine molesta Kützing marine neodiminuta Krammer freshwater neothumensis Krammer freshwater pediculus Ehrenberg freshwater placentula Ehrenberg freshwater portei E.O'Meara marine pseudomarginata W.Gregory marine punctatissima Greville marine scutellum Ehrenberg marine CYMBELLALES Anomoeoneidaceae ADLAFIA Gerd Moser, Lange-Bertalot & Metzeltin bryophila (J.B.Petersen) Lange-Bertalot freshwater/terrestr minuscula (Grunow) Lange-Bertalot freshwaterial suchlandtii (Hustedt) Monnier & Ector freshwater ANOMOEONEIS Pfitzer sphaerophora Pfitzer marine/freshwater DICKIEIA Berkeley ex Kützing ulvacea Berkeley ex Kützing marine STAUROPHORA Mereschkowsky salina (W.Smith) Mereschkowsky brackish tackei (Hustedt) Bahls freshwater Cymbellaceae BREBISSONIA Grunow lanceolata (C.Agardh) R.K.Mahoney & Reimer freshwater CYMBELLA C.Agardh affinis Kützing freshwater aspera (Ehrenberg) Cleve freshwater cistula (Ehrenberg) O.Kirchner freshwater compacta Østrup freshwater cymbiformis C.Agardh freshwater helvetica Kützing freshwater heteropleura (Ehrenberg) Kützing freshwater hustedtii Krasske freshwater laevis Nägeli freshwater

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neoleptoceros Krammer freshwater obtusiuscula Kützing freshwater pseudonorvegica E.Y.Haworth freshwater tumida (Brébisson) Van Heurck freshwater tumidula Grunow freshwater turgidula Grunow freshwater CYMBELLAFALSA Lange-Bertalot & Metzeltin diluviana (Krasske) Lange-Bertalot & Metzeltin marine/freshwater CYMBOPLEURA (Krammer) Krammer amphicephala (Nägeli ex Kützing) Krammer freshwater angustata (W.Smith) Krammer freshwater austriaca (Grunow) Krammer freshwater cuspidata (Kützing) Krammer freshwater designata (Krammer) Bahls freshwater hauckii (Van Heurck) Krammer freshwater hybrida (Grunow ex Cleve) Krammer freshwater inaequalis (Ehrenberg) Krammer freshwater inaequilatera (Lagerstedt) Krammer freshwater incerta (Grunow) Krammer freshwater lata (Grunow ex Cleve) Krammer freshwater naviculiformis (Auerswald ex Heiberg) Krammer freshwater neoheteropleura Krammer freshwater reinhardtii (Grunow) Krammer freshwater similis (Krasske) Krammer freshwater subcuspidata (Krammer) Krammer freshwater DIDYMOSPHENIA Mart.Schmidt geminata (Lyngbye) Mart.Schmidt freshwater GEISSLERIA Lange-Bertalot & Metzeltin acceptata (Hustedt) Lange-Bertalot & Metzeltin freshwater schoenfeldii (Hustedt) Lange-Bertalot & Metzeltin freshwater GOMPHOCYMBELLOPSIS Krammer ancyli (Cleve) Krammer freshwater KURTKRAMMERIA Bahls aequalis (W.Smith) Bahls freshwater NAVICYMBULA Krammer pusilla (Grunow) Krammer freshwater PARAPLACONEIS Kulikovskiy, Lange-Bertalot & Metzeltin placentula (Ehrenberg) M.S.Kulikovskiy & Lange-Bertalot freshwater Gomphonemataceae DELICATOPHYCUS M.J.Wynne delicatulus (Kützing) M.J.Wynne freshwater ENCYONEMA Kützing auerswaldii Rabenhorst freshwater cespitosum Kützing freshwater elginense (Krammer) D.G.Mann freshwater gaeumannii (Meister) Krammer freshwater gracile Rabenhorst freshwater hebridicum Grunow ex Cleve freshwater hilliardii (Manguin ex Kociolek & Reviers) Krammer freshwater lacustre (C.Agardh) Pantocsek freshwater leibleinii (C.Agardh) W.J.Silva, R.Jahn, T.A.V.Ludwig, & M.Menezes freshwater

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minutum (Hilse) D.G.Mann freshwater norvegicum (Grunow) Mayer freshwater perpusillum (Cleve-Euler) D.G.Mann freshwater silesiacum (Bleisch) D.G.Mann freshwater ventricosum (C.Agardh) Grunow freshwater ENCYONOPSIS Krammer cesatii (Rabenhorst) Krammer freshwater descripta (Hustedt) Krammer freshwater microcephala (Grunow) Krammer freshwater GOMPHONEIS Cleve clevei (Fricke) Gil freshwater rhombica (Fricke) Merino, García, Hernández-Mariné & Fernández freshwater GOMPHONEMA Ehrenberg acuminatum Ehrenberg freshwater angustatum (Kützing) Rabenhorst freshwater angustum C.Agardh freshwater apicatum Ehrenberg freshwater augur Ehrenberg freshwater brebissonii Kützing freshwater capitatum Ehrenberg freshwater constrictum Ehrenberg freshwater dichotomum Kützing freshwater elongatum W.Smith freshwater gracile Ehrenberg freshwater grunowii R.M.Patrick & Reimer freshwater hebridense W.Gregory freshwater helveticum Brun freshwater insigne W.Gregory freshwater intricatum Kützing freshwater lagerheimii A.Cleve freshwater longiceps Ehrenberg freshwater minutum (C.Agardh) C.Agardh freshwater montanum (J.Schumann) Grunow freshwater olivaceoides Hustedt freshwater olivaceum (Hornemann) Brébisson freshwater parvulum (Kützing) Kützing freshwater productum (Grunow) Lange-Bertalot & E.Reichardt freshwater pumilum (Grunow) E.Reichardt & Lange-Bertalot freshwater sarcophagus W.Gregory freshwater sphaerophorum Ehrenberg freshwater subtile Ehrenberg freshwater tenellum Kützing freshwater tergestinum (Grunow) Fricke freshwater truncatum Ehrenberg freshwater varioreduncum Jüttner, Ector, E. Reichardt, Van de Vijver & E.J.Cox freshwater ventricosum W.Gregory freshwater vibrio Ehrenberg freshwater vibrioides E.Reichardt & Lange-Bertalot freshwater PLACONEIS Mereschkowsky abiskoensis (Hustedt) Lange-Bertalot & Metzeltin freshwater amphibola (Cleve) E.J.Cox freshwater

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clementioides (Hustedt) E.J.Cox freshwater clementis (Grunow) E.J.Cox freshwater dicephala (Ehrenberg) Mereschkowsky marine elginensis (W.Gregory) E.J.Cox freshwater explanata (Hustedt) A.Mamaya freshwater gastrum (Ehrenberg) Mereschkowsky freshwater porifera (Hustedt) T.Ohtsuka & Y.Fujita freshwater undulata (Østrup) Lange-Bertalot freshwater REIMERIA Kociolek & Stoermer sinuata (W.Gregory) Kociolek & Stoermer freshwater Rhoicospheniaceae GOMPHONEMOPSIS Medlin pseudexigua Medlin marine RHOICOSPHENIA Grunow abbreviata (C.Agardh) Lange-Bertalot freshwater DICTYONEIDALES Dictyoneidaceae DICTYONEIS Cleve marginata (F.W.Lewis) Cleve marine EUNOTIALES Eunotiaceae EUNOTIA Ehrenberg arcuoides Foged freshwater arcus Ehrenberg freshwater bactriana Ehrenberg freshwater bidens Ehrenberg freshwater bidentula W.Smith freshwater bidentuloides Foged freshwater bigibba Kützing freshwater bilunaris (Ehrenberg) Schaarschmidt freshwater camelus Ehrenberg freshwater compacta Hustedt ex Simonsen freshwater curtagrunowii Nörpel-Schempp & Lange-Bertalot freshwater denticulata (Brébisson ex Kützing) Rabenhorst freshwater diadema Ehrenberg freshwater diodon Ehrenberg freshwater elegans Østrup freshwater exigua (Brébisson ex Kützing) Rabenhorst freshwater fallax A.Cleve freshwater flexuosa (Brébisson ex Kützing) Kützing freshwater formica Ehrenberg freshwater glacialis F.Meister freshwater iatriaensis Foged freshwater incisa W.Smith ex W.Gregory freshwater jemtlandica (Fontell) A.Berg freshwater lapponica Grunow ex A.Cleve freshwater lunaris (Ehrenberg) Grunow freshwater major (W.Smith) Rabenhorst freshwater meisteri Hustedt freshwater microcephala Krasske freshwater minor (Kützing) Grunow freshwater monodon Ehrenberg freshwater

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naegelii Migula freshwater papilio (Ehrenberg) Grunow freshwater parallela Ehrenberg freshwater pectinalis (Kützing) Rabenhorst freshwater praerupta Ehrenberg freshwater rhomboidea Hustedt freshwater septentrionalis Østrup freshwater serra Ehrenberg freshwater soleirolii (Kützing) Rabenhorst freshwater subarcuatoides Alles, Nörpel & Lange-Bertalot freshwater sudetica O.Müller freshwater tenella (Grunow) Hustedt freshwater tetraodon Ehrenberg freshwater/terrestr trinacria Krasske freshwaterial valida Hustedt freshwater vanheurckii R.M.Patrick freshwater varioundulata Nörpel & Lange-Bertalot freshwater veneris (Kützing) De Toni freshwater SEMIORBIS R.M.Patrick hemicyclus (Ehrenberg) R.M.Patrick freshwater/terrestr ial Peroniaceae PERONIOPSIS Hustedt heribaudii (J.Brun & M.Peragallo) Hustedt FRAGILARIALES Fragilariaceae FRAGILARIA Lyngbye amphicephaloides Lange-Bertalot freshwater barbatula (Kützing) Lange-Bertalot freshwater bidens Heiberg freshwater capucina Desmazières marine/freshwater crotonensis Kitton marine/freshwater gracilis Østrup freshwater hyalina (Kützing) Grunow marine radians (Kützing) D.M.Williams & Round freshwater rumpens (Kützing) G.W.F.Carlson freshwater striatula Lyngbye marine tenera (W.Smith) Lange-Bertalot freshwater tenuicollis Heiberg freshwater vaucheriae (Kützing) J.B.Petersen freshwater FRAGILARIFORMA D.M.Williams & Round bicapitata (A.Mayer) D.M.Williams & Round freshwater constricta (Ehrenberg) D.M.Williams & Round freshwater virescens (Ralfs) D.M.Williams & Round freshwater ODONTIDIUM Kützing anceps (Ehrenberg) Ralfs freshwater hyemale (Roth) Kützing freshwater mesodon (Kützing) Kützing marine PODOCYSTIS Bailey adriatica (Kützing) Ralfs marine SYNEDRA Ehrenberg arcus Kützing marine

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baculus W.Gregory marine famelica Kützing freshwater frauenfeldii Grunow marine fulgens (Greville) W.Smith marine lemmermannii West & G.S. West freshwater nana F.Meister freshwater putealis O'Meara freshwater revaliensis Lemmermann freshwater spathulata O'Meara freshwater superba Kützing marine Staurosiraceae PSEUDOSTAUROSIRA D.M.Williams & Round brevistriata (Grunow) D.M.Williams & Round freshwater elliptica (Schumann) Edlund, Morales & Spaulding freshwater parasitica (W.Smith) E.Morales freshwater subconstricta (Grunow) Kulikovskiy & Genkal freshwater STAUROSIRA Ehrenberg binodis (Ehrenberg) Lange-Bertalot freshwater construens Ehrenberg freshwater inflata (Heiden) A.Rusanov, Ács, E.Morales & Ector leptostauron (Ehrenberg) Kulikovskiy & Genkal freshwater subsalina (Hustedt) Lange-Bertalot brackish venter (Ehrenberg) Cleve & J.D.Möller freshwater STAUROSIRELLA D.M.Wiliams & Round dubia (Grunow) E.A.Morales & K.M.Manoylov freshwater harrisonii (W.Smith) E. Morales & C.E.Wetzel lapponica (Grunow) D.M.Williams & Round freshwater martyi (Héribaud-Joseph) E.A.Morales & K.M.Manoylov freshwater mutabilis (W.Smith) E.Morales & Van de Vijver freshwater pinnata (Ehrenberg) D.M.Williams & Round freshwater LICMOPHORALES Licmophoraceae LICMOPHORA C.Agardh ehrenbergii (Kützing) Grunow marine flabellata (Greville) C.Agardh brackish gracilis (Ehrenberg) Grunow marine juergensii C.Agardh marine lyngbyei (Kützing) Grunow marine paradoxa (Lyngbye) C.Agardh marine splendida Greville marine Ulnariaceae CATACOMBAS D.M.Wiliams & Round gaillonii (Bory) D.M.Williams & Round marine CTENOPHORA (Grunow) D.M.Williams & Round pulchella (Ralfs ex Kützing) D.M.Williams & Round freshwater HANNAEA R.M.Patrick arcus (Ehrenberg) R.M.Patrick freshwater TABULARIA (Kützing) D.M.Williams & Round affinis (Kützing) Snoeijs freshwater fasciculata (C.Agardh) D.M.Williams & Round marine investiens (W.Smith) D.M.Williams & Round marine

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tabulata (C.Agardh) Snoeijs marine/freshwater ULNARIA (Kutzing) Compère acus (Kützing) Aboal freshwater amphirhynchus (Ehrenberg) Compère & Bukhtiyarova freshwater biceps (Kützing) Compère freshwater capitata (Ehrenberg) Compère freshwater danica (Kützing) Compère & Bukhtiyarova freshwater delicatissima (W.Smith) Aboal & P.C.Silva freshwater oxyrhynchus (Kützing) Aboal freshwater ulna (Nitzsch) Compère freshwater LYRELLALES Lyrellaceae LYRELLA Karajeva [Karaeva] abrupta (W.Gregory) D.G.Mann marine hennedyi (W.Smith) Stickle & D.G.Mann marine lyra (Ehrenberg) Karajeva marine nebulosa (Gregory) D.G.Mann marine praetexta (Ehrenberg) D.G.Mann marine sandriana (Grunow) D.G.Mann marine spectabilis (Gregory) D.G.Mann marine PETRONEIS A.J.Stickle & D.G.Mann humerosa (Brébisson ex W.Smith) Stickle & D.G.Mann marine latissima (W.Gregory) A.J.Stickle & D.G.Mann marine marina (Ralfs) D.G.Mann marine MASTOGLOIALES Achnanthaceae ACHNANTHES Bory armillaris (O.F.Müller) Guiry marine coarctata (Brébisson ex W.Smith) Grunow freshwater/terrestr impexa Lange-Bertalot freshwater ial parvula Kützing marine/freshwater PLATESSA Lange-Bertalot conspicua (Ant.Mayer) Lange-Bertalot freshwater montana (Krasske) Lange-Bertalot freshwater rupestris (Krasske) Lange-Bertalot freshwater saxonica (Krasske ex Hustedt) C.E.Wetzel, Lange-Bertalot & Ector freshwater Mastogloiaceae ANEUMASTUS D.G.Mann & A.J.Stickle maculosus (Donkin) Lange-Bertalot freshwater minor Lange-Bertalot freshwater rostratus (Hustedt) Lange-Bertalot freshwater stroesei (Østrup) D.G.Mann freshwater tuscula (Ehrenberg) D.G.Mann & A.J.Stickle freshwater tusculoides (A.Cleve) D.G.Mann marine/freshwater DECUSSIPHYCUS Guiry & Gandhi placenta (Ehrenberg) Guiry & Gandhi freshwater MASTOGLOIA Thwaites ex W.Smith apiculata W.Smith marine binotata (Grunow) Cleve marine braunii Grunow brackish closeii O'Meara marine/freshwater convergens O'Meara marine

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costata O'Meara freshwater danseyi (Thwaites) Thwaites ex W.Smith marine/freshwater elliptica (C.Agardh) Cleve freshwater fimbriata (T.Brightwell) Grunow marine grevillei W.Smith freshwater lanceolata Thwaites ex W.Smith brackish portieriana Grunow marine smithii Thwaites ex W.Smith freshwater NAVICULALES Amphipleuraceae AMPHIPLEURA Kützing pellucida (Kützing) Kützing freshwater FRUSTULIA Rabenhorst amosseana Lange-Bertalot freshwater amphipleuroides (Grunow) Cleve-Euler marine/freshwater crassinervia (Brébisson ex W.Smith) Lange-Bertalot & Krammer freshwater/terrestr curvata Kulichová & Urbánková freshwater ial elongatissima (Manguin) Lange-Bertalot & Metzeltin freshwater erifuga Lange-Bertalot & Krammer freshwater krammeri Lange-Bertalot & Metzeltin freshwater/terrestr rhomboides (Ehrenberg) De Toni freshwater/terrestrial saxonica Rabenhorst terrestrial ial vulgaris (Thwaites) De Toni freshwater/terrestr weinholdii Hustedt freshwaterial HALAMPHORA (Cleve) Mereschkowsky angularis (Gregory) Levkov Brackish coffeiformis (C.Agardh) Mereschkowsky brackish costata (W.Smith) Levkov marine cymbifera (Gregory) Levkov marine hyalina (Kützing) Rimet & R.Jahn marine lineata (Gregory) Levkov marine minutissima (Kützing) C.E.Wetzel & Compère marine montana (Krasske) Levkov freshwater normanii (Rabenhorst) Levkov freshwater oligotraphenta (Lange-Bertalot) Levkov freshwater perpusilla (Grunow) Q.-M.You & Kociolek freshwater thumensis (A.Mayer) Levkov freshwater turgida (Gregory) Levkov brackish veneta (Kützing) Levkov freshwater Berkeleyaceae BERKELEYA Greville fragilis Greville marine rutilans (Trentepohl ex Roth) Grunow marine PARLIBELLUS E.J.Cox rhombicus (W.Gregory) E.J.Cox marine Brachysiraceae BRACHYSIRA Kützing brebissonii R.Ross freshwater conamarae B.Kennedy & Allott freshwater exilis (Kützing) Round & D.G.Mann freshwater follis (Ehrenberg) R.Ross freshwater

11 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

garrensis (Lange-Bertalot & Krammer) Lange-Bertalot freshwater microcephala (Grunow) Compère freshwater neglectissima Lange-Bertalot freshwater praegeri B.Kennedy & Allott freshwater serians (Brébisson) Round & D.G.Mann freshwater styriaca (Grunow) R.Ross freshwater vitrea (Grunow) R.Ross freshwater zellensis (Grunow) Round & D.G.Mann freshwater NUPELA Vyverman & Compère lapidosa (Krasske) Lange-Bertalot freshwater tenuicephala (Hustedt) Lange-Bertalot freshwater Cavinulaceae CAVINULA D.G.Mann & A.J.Stickle cocconeiformis (W.Gregory ex Greville) D.G.Mann & A.J.Stickle freshwater/terrestr jaernefeltii (Hustedt) D.G.Mann & A.J.Stickle freshwater/terrestr ial lapidosa (Krasske) Lange-Bertalot freshwater/terrestrial pseudoscutiformis (Hustedt) D.G.Mannial & A.J.Stickle freshwater/terrestr scutelloides (W.Smith) Lange-Bertalot freshwater/terrestrial variostriata (Krasske) D.G.Mann & A.J.Stickleial freshwater/terrestr ial Cosmioneidaceae COSMIONEIS D.G.Mann & Stickle pusilla (W.Smith) D.G.Mann & A.J.Stickle marine/freshwater Diadesmidaceae HUMIDOPHILA (Lange-Bertalot & Werum) R.L.Lowe, Kociolek, J.R.Johansen, Van de Vijver, Lange-Bertalot & contenta (Grunow)Kopalová Lowe, Kociolek, J.R.Johansen, Van de Vijver, Lange-Bertalot & freshwater perpusillaKopalová(Grunow) Lowe, Kociolek, J.R.Johansen, Van de Vijver, Lange-Bertalot & freshwater/terrestr Kopalová ial LUTICOLA D.G.Mann cohnii (Hilse) D.G.Mann freshwater/terrestr lagerheimii (Cleve) D.G.Mannial freshwater/terrestr mutica (Kützing) D.G.Mann freshwater/terrestrial plausibilis (Hustedt) D.G.Mannial freshwater/terrestr ventricosa (Kützing) D.G.Mann ialfreshwater/terrestr ial Diploneidaceae DIPLONEIS Ehrenberg ex Cleve aestiva (Donkin) Cleve marine/freshwater boldtiana Cleve freshwater bombus (Ehrenberg) Ehrenberg marine coffeiformis (A.W.F.Schmidt) Cleve marine constricta Cleve marine crabro (Ehrenberg) Ehrenberg marine cynthia (A.W.F.Schmidt) Cleve marine didyma (Ehrenberg) Ehrenberg marine/freshwater divergens (A.W.F.Schmidt) Cleve marine domblittensis (Grunow) Cleve marine/freshwater elliptica (Kützing) Cleve marine/freshwater entomon (Ehrenberg) Ehrenberg marine eugenia (A.W.F.Schmidt) Boyer marine finnica (Ehrenberg) Cleve freshwater fusca (W.Gregory) Cleve marine incurvata (Gregory) Cleve marine interrupta (Kützing) Cleve marine

12 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

lineata (Donkin) Cleve marine marginestriata Hustedt freshwater minuta J.B.Petersen freshwater nitescens (W.Gregory) Cleve marine notabilis (Greville) Cleve marine oblongella (Nägeli ex Kützing) Cleve-Euler freshwater oculata (Brébisson) Cleve freshwater ovalis (Hilse) Cleve freshwater petersenii Hustedt freshwater pseudovalis Hustedt brackish puella (Schumann) Cleve freshwater smithii (Brébisson) Cleve marine/freshwater splendida Cleve marine subcincta (A.W.F.Schmidt) Cleve marine suborbicularis (W.Gregory) Cleve marine subovalis Cleve marine/freshwater Naviculaceae CALONEIS Cleve alpestris (Grunow) Cleve freshwater amphisbaena (Bory) Cleve freshwater bacillaris (Gregory) Cleve freshwater bacillum (Grunow) Cleve ubiquitous budensis (Grunow) Krammer freshwater clevei (Lagerstedt) Cleve freshwater dubia Krammer freshwater fusioides (Grunow) Heiden & Kolbe freshwater hebes (Ralfs) R.M.Patrick freshwater latiuscula (Kützing) Cleve freshwater leptosoma (Grunow) Krammer freshwater liber (W.Smith) Cleve marine limosa (Kützing) R.M.Patrick freshwater molaris (Grunow) Krammer freshwater/terrestr obtusa (W.Smith) Cleve freshwaterial oregonica (Ehrenberg) R.M.Patrick brackish schumanniana (Grunow) Cleve freshwater silicula (Ehrenberg) Cleve freshwater ventricosa F.Meister freshwater westii (W.Smith) Hendey marine GENKALIA Kulikovskiy, Lange-Bertalot & Metzeltin digituloides (Lange-Bertalot) Lange-Bertalot & Kulikovskiy freshwater GYROSIGMA Hassall acuminatum (Kützing) Rabenhorst freshwater arcuatum (Donkin) Sterrenburg freshwater attenuatum (Kützing) Rabenhorst freshwater balticum (Ehrenberg) Rabenhorst marine distortum (W.Smith) Griffith & Henfrey marine eximium (Thwaites) Boyer marine fasciola (Ehrenberg) J.W.Griffith & Henfrey marine kuetzingii (Grunow) Cleve freshwater littorale (W.Smith) J.W.Griffith & Henfrey marine macrum (W.Smith) J.W.Griffith & Henfrey freshwater

13 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

obtusatum (Sullivant & Wormley) C.S.Boyer freshwater prolongatum (W.Smith) J.W.Griffith & Henfrey marine scalproides (Rabenhorst) Cleve freshwater sciotoense (W.S.Sullivant) Cleve marine strigilis (W.Smith) J.W.Griffin & Henfrey brackish tenuissimum (W.Smith) J.W.Griffith & Henfrey marine wansbeckii (Donkin) Cleve marine HASLEA Simonsen crucigera (W.Smith) Simonsen marine HIPPODONTA Lange-Bertalot, Witkowski & Metzeltin capitata (Ehrenberg) Lange-Bertalot, Metzeltin & Witkowski freshwater costulata (Grunow) Lange-Bertalot, Metzeltin & Witkowski freshwater hungarica (Grunow) Lange-Bertalot, Metzeltin & Witkowski freshwater luneburgensis (Grunow) Lange-Bertalot, Metzeltin & A.Witkowski freshwater KHURSEVICHIA Kulikovskiy, Lange-Bertalot & Metzeltin jentzschii (Grunow) Kulikovskiy, Metzeltin & Lange-Bertalot freshwater NAVICULA Bory angusta Grunow freshwater/terrestr apiculata Brébissonial marine/freshwater archeriana O'Meara marine/freshwater bottnica Grunow brackish cancellata Donkin brackish capitatoradiata H.Germain ex Gasse brackish carassius Ehrenberg freshwater cari Ehrenberg freshwater cincta (Ehrenberg) Ralfs brackish cluthensis W.Gregory marine coerulea O'Meara freshwater collisiana O'Meara marine crucifera Grunow marine cryptocephala Kützing marine/freshwater cryptotenella Lange-Bertalot freshwater cuspis O'Meara marine delginensis O'Meara freshwater digitoconvergens Lange-Bertalot marine/freshwater digitoradiata (W.Gregory) Ralfs marine/freshwater directa (W.Smith) Ralfs marine distans (W.Smith) Ralfs marine ergadensis (W.Gregory) Ralfs marine farta Hustedt freshwater fortis (W.Gregory) Ralfs ex Pritchard marine franciscae O'Meara marine globifera O'Meara freshwater globosa F.Meister freshwater glomus J.R.Carter freshwater gottlandica Grunow freshwater gregaria Donkin ubiquitous gregoryi Ralfs ex Pritchard marine grunovii O'Meara marine/freshwater hibernica O'Meara marine impexa Hustedt freshwater

14 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

incisa O'Meara freshwater inflexa (W.Gregory) Ralfs brackish johncarteri D.M.Williams freshwater libonensis Schoeman marine/freshwater longa (W.Gregory) Ralfs marine macula W.Gregory freshwater menapiensis O'Meara freshwater menisculus Schumann marine/freshwater meniscus Schumann brackish minima Grunow freshwater mournei R.M.Patrick freshwater northumbrica Donkin marine oblonga (Kützing) Kützing freshwater opportuna Hustedt freshwater oppugnata Hustedt freshwater paanaensis Cleve-Euler freshwater palpebralis Brébisson ex W.Smith brackish peregrina (Ehrenberg) Kützing brackish petersenii Hustedt freshwater phyllepta Kützing brackish pseudolanceolata Lange-Bertalot freshwater quarnerensis Grunow marine radiosa Kützing freshwater/terrestr ramosissima (C.Agardh)ial Cleve marine reinhardtii (Grunow) Grunow freshwater rhynchocephala Kützing marine/freshwater rotaeana (Rabenhorst) Grunow freshwater rupestris O'Meara freshwater sansegana Grunow marine/freshwater semen Ehrenberg freshwater slesvicensis Grunow brackish solaris W.Gregory marine sphaerophora Ehrenberg none splendicula VanLandingham freshwater tantula Hustedt freshwater termes (Ehrenberg) O'Meara freshwater torneënsis Cleve marine tripunctata (O.F.Müller) Bory freshwater trivialis Lange-Bertalot freshwater trochus Schumann none undosa Ehrenberg marine/freshwater upsaliensis (Grunow) M.Peragallo marine/freshwater veneta Kützing brackish viridula (Kützing) Ehrenberg freshwater vulpina Kützing freshwater zostereti Grunow marine PINNUNAVIS H.Okuno elegans (W.Smith) Okuno marine/freshwater TRACHYNEIS P.T.Cleve aspera (Ehrenberg) Cleve marine clepsydra (Donkin) Cleve marine

15 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

Naviculales incertae sedis CHAMAEPINNULARIA Lange-Bertalot & Krammer hassiaca (Krasske) Cantonati & Lange-Bertalot freshwater krookii (Grunow) Lange-Bertalot & Krammer freshwater/terrestr mediocris (Krasske) Lange-Bertalot & Krammerialfreshwater soehrensis (Krasske) Lange-Bertalot & Krammer freshwater KOBAYASIELLA Lange-Bertalot jaagii (Meister) Lange-Bertalot freshwater subtilissima (Cleve) Lange-Bertalot freshwater MAYAMAEA Lange-Bertalot atomus (Kützing) Lange-Bertalot freshwater/terrestr disjuncta (Hustedt) J.Y. Li & Y.Z.Qiial freshwater excelsa (Krasske) Lange-Bertalot freshwater Neidiaceae NEIDIOMORPHA Lange-Bertalot & Cantonati binodis (Ehrenberg) M.Cantonati, Lange-Bertalot & N.Angeli freshwater NEIDIUM Pfitzer affine (Ehrenberg) Pfitzer freshwater alpinum Hustedt freshwater ampliatum (Ehrenberg) Krammer freshwater bisulcatum (Lagerstedt) Cleve freshwater dubium (Ehenberg) Cleve freshwater hercynicum Ant.Mayer freshwater hitchcockii (Ehrenberg) Cleve freshwater iridis (Ehrenberg) Cleve freshwater ladogense (Cleve) Foged freshwater perminutum Cleve-Euler freshwater productum (W.Smith) Cleve freshwater vernale (Reichelt ex Hustedt) Metzeltin & Lange-Bertalot freshwater Pinnulariaceae DIATOMELLA Greville balfouriana Greville freshwater HYGROPETRA Krammer & Lange-Bertalot balfouriana (Grunow ex Cleve) Krammer & Lange-Bertalot freshwater PINNULARIA Ehrenberg abaujensis (Pantocsek) R.Ross freshwater acrosphaeria W.Smith freshwater acuminata W.Smith freshwater alpina W.Smith freshwater angulosa Krammer freshwater angusta (Cleve) Krammer freshwater appendiculata (C.Agardh) Schaarschmidt freshwater bicapitata (Lagerstedt) Cleve freshwater biceps W.Gregory freshwater bipectinalis (Schumann) Greguss freshwater borealis Ehrenberg freshwater/terrestr brebissonii (Kützing)ial Rabenhorst freshwater brevicostata Cleve freshwater cardinalis (Ehrenberg) W.Smith freshwater claviculus (W.Gregory) Rabenhorst marine clevei R.M.Patrick freshwater

16 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

dactylus Ehrenberg freshwater divergens W.Smith freshwater divergentissima (Grunow) Cleve freshwater erratica Krammer freshwater esox Ehrenberg freshwater gentilis (Donkin) Cleve freshwater gigas Ehrenberg freshwater globiceps W.Gregory marine/freshwater gracillima W.Gregory freshwater hemiptera (Kützing) Rabenhorst freshwater iatriaensis Foged freshwater imperfecta Cleve-Euler freshwater inconstans Ant.Mayer freshwater intermedia (Lagerstedt) Cleve freshwater interrupta W.Smith freshwater islandica Østrup freshwater lange-bertalotii Krammer freshwater lata (Brébisson) W.Smith freshwater/terrestr legumen Ehrenberg freshwaterial major (Kützing) Rabenhorst freshwater mayeri Krammer freshwater mesogongyla Ehrenberg freshwater mesolepta (Ehrenberg) W.Smith freshwater microstauron (Ehrenberg) Cleve freshwater neomajor Krammer freshwater neorabenhorstii Gogorev freshwater nobilis (Ehrenberg) Ehrenberg freshwater nodosa (Ehrenberg) W.Smith freshwater obscura Krasske freshwater oriunda Krammer freshwater ovata Krammer freshwater platycephala (Ehrenberg) Cleve freshwater polyonca (Brébisson) W.Smith freshwater pulchra Østrup freshwater quadratarea (A.W.F.Schmidt) Cleve marine rectangulata (W.Gregory) Rabenhorst marine rupestris Hantzsch freshwater schoenfelderi Krammer freshwater stomatophora (Grunow) Cleve freshwater/terrestr streptoraphe Cleve freshwater/terrestrial subcapitata W.Gregoryial freshwater subgibba Krammer freshwater subinterrupta Krammer & S.Schroeter freshwater subrupestris Krammer freshwater sudetica Hilse freshwater tabellaria Ehrenberg freshwater trevelyana (Donkin) Rabenhorst marine undula (Schumann) Krammer freshwater viridiformis Krammer freshwater viridis (Nitzsch) Ehrenberg freshwater Plagiotropidaceae

17 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

PLAGIOTROPIS Pfitzer elegans (W.Smith) Grunow marine lepidoptera (W.Gregory) Kuntze marine/freshwater vitrea (W.Smith) Grunow marine Pleurosigmataceae CARINASIGMA G.Reid angustatum (Donkin) G.Reid marine minutum (Donkin) G.Reid marine rectum (Donkin) G.Reid marine DONKINIA Ralfs carinata (Donkin) Ralfs marine PLEUROSIGMA W.Smith angulatum (J.T.Quekett) W.Smith marine decorum W.Smith marine elongatum W.Smith marine formosum W.Smith marine inflatum Shadbolt marine intermedium W.Smith marine marinum Donkin marine normanii Ralfs marine pulchrum Grunow marine rigidum W.Smith marine speciosum W.Smith marine strigosum W.Smith marine RHOICOSIGMA Grunow compactum (Greville) Grunow marine TOXONIDEA Donkin gregoriana Donkin marine insignis Donkin marine Scolioneidaceae SCOLIONEIS D.G.Mann tumida (Brébisson ex Kützing) D.G.Mann marine Scoliotropidaceae BIREMIS D.G.Mann & E.J.Cox bicontracta (Østrup) Cantonati & Lange-Bertalot freshwater zachariasii (Reichelt) Edlund, N.A.Andresen & Soninkhisig freshwater PROGONOIA H.-J.Schrader musca (W.Gregory) Schrader marine SCOLIOTROPIS P.T.Cleve latestriata (Brébisson ex Kützing) Cleve brackish Sellaphoraceae EOLIMNA Lange-Bertalot & W.Schiller aboensis (Cleve) S.I.Genkal freshwater FALLACIA Stickle & D.G.Mann forcipata (Greville) Stickle & D.G.Mann marine helensis (Schulz) D.G.Mann freshwater indifferens (Hustedt) D.G.Mann freshwater pygmaea (Kützing) Stickle & D.G.Mann freshwater subhamulata (Grunow) D.G.Mann freshwater vitrea (Østrup) D.G.Mann freshwater

18 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

SELLAPHORA Mereschowsky americana (Ehrenberg) D.G.Mann freshwater bacillum (Ehrenberg) D.G.Mann freshwater digna (Hustedt) C.E.Wetzel, L.Ector, Van de Vijver, Compère & D.G.Mann freshwater hustedtii (Krasske) Lange-Bertalot & Werum freshwater laevissima (Kützing) D.G.Mann freshwater pupula (Kützing) Mereschkovsky freshwater rectangularis (W.Gregory) Lange-Bertalot & Metzeltin freshwater rostrata (Hustedt) J.R.Johansen freshwater rotunda (Hustedt) C.E.Wetzel, L.Ector, B.Van de Vijver, Compère & D.G.Mann freshwater schadei (Krasske) C.E.Wetzel, L.Ector, B.Van de Vijver, Compère & D.G.Mann freshwater seminulum (Grunow) D.G.Mann freshwater subrotundata (Hustedt) C.E.Wetzel, L.Ector, B.Van de Vijver, Compère & D.G.Mann freshwater tridentula (Krasske) C.E.Wetzel freshwater vitabunda (Hustedt) D.G.Mann freshwater wittrockii (Lagerstedt) Lange-Bertalot & Metzeltin freshwater Stauroneidaceae CRATICULA Grunow accomoda (Hustedt) D.G.Mann freshwater ambigua (Ehrenberg) D.G.Mann freshwater cuspidata (Kutzing) D.G.Mann freshwater halophila (Grunow) D.G.Mann marine/freshwater subminuscula (Manguin) C.E.Wetzel & Ector freshwater DOROFEYUKEA Kulikovskiy, Maltsev, Andreeva & Kociolek grimmei (Krasske) Kulikovskiy & Kociolek kotschyi (Grunow) Kulikovskiy, Kociolek, Tusset & T.Ludwig FISTULIFERA Lange-Bertalot saprophila (Lange-Bertalot & Bonik) Lange-Bertalot freshwater PRESTAURONEIS K.Bruder & Medlin crucicula (W.Smith) Genkal & Yarushina marine/freshwater integra (W.Smith) Bruder freshwater protracta (Grunow) Kulikovskiy & Glushchenko freshwater STAURONEIS Ehrenberg acuta W.Smith marine/freshwater agrestis J.B.Petersen aerophytic alpina Hustedt freshwater anceps Ehrenberg freshwater costata O'Meara marine finlandia Bahls freshwater gracilior E.Reichardt freshwater gracilis Ehrenberg freshwater gregoryi Ralfs freshwater heinii Lange-Bertalot & Krammer freshwater javanica (Grunow) Cleve freshwater kriegeri R.M.Patrick freshwater legumen (Ehrenberg) Kützing freshwater legumen (Ehrenberg) Kützing freshwater mackintoshii O'Meara freshwater obtusa Lagerstedt freshwater pergracilis Van de Vijver & Lange-Bertalot freshwater phoenicenteron (Nitzsch) Ehrenberg freshwater

19 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

phyllodes Ehrenberg freshwater platystoma Ehrenberg freshwater producta Grunow freshwater prominula (Grunow ex Cleve) Hustedt freshwater rhombica O'Meara freshwater scandinavica Lagerstedt freshwater siberica (Grunow) Lange-Bertalot & Krammer freshwater simulans (Donkin) R.Ross freshwater smithii Grunow freshwater supergracilis Van de Vijver & Lange-Bertalot freshwater superkuelbsii Bahls freshwater ursamaioris Lange-Bertalot & Van de Vijver freshwater PLAGIOGRAMMALES Plagiogrammaceae DIMEREGRAMMA Ralfs fulvum (W.Gregory) Ralfs marine marinum (W.Gregory) Ralfs marine minus (W.Gregory) Ralfs marine GLYPHODESMIS Greville distans (W.Gregory) Grunow marine williamsonii (W.Smith) Grunow marine PLAGIOGRAMMA Greville costatum Greville marine gregorianum Greville marine staurophorum (W.Gregory) Heiberg marine RHABDONEMATALES Grammatophoraceae GRAMMATOPHORA Ehrenberg gibberula Kützing marine marina (Lyngbye) Kützing marine oceanica Ehrenberg marine MICROTABELLA Round interrupta (Ehrenberg) Round marine Rhabdonemataceae RHABDONEMA Kützing adriaticum Kützing marine arcuatum (Lyngbye) Kützing marine/freshwater minutum Kützing marine/freshwater RHAPHONEIDALES Psammodiscaceae PSAMMODISCUS Round & D.G.Mann nitidus (W.Gregory) Round & D.G.Mann marine Rhaphoneidaceae RHAPHONEIS Ehrenberg amphiceros (Ehrenberg) Ehrenberg marine archeri O'Meara marine caduceus (Ehrenberg) Heurck marine liburnica Grunow marine rhombus (Ehrenberg) Ehrenberg marine scutelloides Grunow marine RHOPALODIALES Rhopalodiaceae

20 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

EPITHEMIA Kützing adnata (Kützing) Brébisson freshwater argus (Ehrenberg) Kützing freshwater frickei Krammer freshwater gibba (Ehrenberg) Kützing freshwater globifera Heiberg freshwater goeppertiana Hilse freshwater hyndmannii W.Smith freshwater muelleri Fricke freshwater operculata (C.Agardh) Ruck & Nakov freshwater parallela (Grunow) Ruck & Nakov freshwater reicheltii Fricke freshwater smithii Carruthers freshwater sorex Kützing freshwater turgida (Ehrenberg) Kützing freshwater RHOPALODIA O.Müller gibberula (Ehrenberg) O.Müller marine/freshwater musculus (Kützing) O.Müller brackish STRIATELLALES Striatellaceae STRIATELLA C.Agardh unipunctata (Lyngbye) C.Agardh marine/freshwater SURIRELLALES Entomoneidaceae ENTOMONEIS Ehrenberg alata (Ehrenberg) Ehrenberg marine ornata (Bailey) Reimer marine paludosa (W.Smith) Reimer marine Surirellaceae CAMPYLODISCUS Ehrenberg ex Kützing bicostatus W.Smith ex Roper freshwater clypeus (Ehrenberg) Ehrenberg ex Kützing marine/freshwater echeneis Ehrenberg ex Kützing marine hodgsonii W.Smith marine neofastuosus Ruck & Nakov marine noricus Ehrenberg ex Kützing freshwater ralfsii W.Smith marine thuretii Brébisson marine CYMATOPLEURA W.Smith elliptica (Brébisson) W.Smith freshwater hibernica W.Smith freshwater ICONELLA Jurilj bifrons (Ehrenberg) Ruck & Nakov freshwater biseriata (Brébisson) Ruck & Nakov freshwater curvula (W.Smith) Ruck & Nakov freshwater delicatissima (F.W.Lewis) Ruck & Nakov freshwater hibernica (Ehrenberg) Ruck & Nakov freshwater linearis (W.Smith) Ruck & Nakov freshwater spiralis (Kützing) E.C.Ruck & T.Nakov freshwater tenera (W.Gregory) Ruck & Nakov marine/freshwater PETRODICTYON D.G.Mann gemma (Ehrenberg) D.G.Mann marine

21 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

STENOPTEROBIA Brébisson ex Van Heurck capitata (Fontell) Lange-Bertalot & Metzeltin freshwater intermedia (F.W.Lewis) Van Heurck ex Hanna freshwater SURIRELLA Turpin amphioxys W.Smith freshwater angusta Kützing freshwater apiculata W.Smith freshwater arctissima A.W.F.Schmidt freshwater birostrata Hustedt freshwater brebissonii Krammer & Lange-Bertalot brackish celtica H.Germain freshwater crumena Brébisson ex Kützing marine elegans Ehrenberg freshwater librile (Ehrenberg) Ehrenberg freshwater minima R.Ross & Abdin brackish minuta Brébisson ex Kützing freshwater ovalis Brébisson marine/freshwater ovulum Hustedt freshwater pulcherrima O'Meara marine regula Ehrenberg freshwater robusta Ehrenberg freshwater smithii Ralfs marine splendida (Ehrenberg) Kützing freshwater striatula Turpin marine subsalsa W.Smith marine suecica Grunow freshwater turgida W.Smith freshwater undulata (Ehrenberg) Ehrenberg freshwater TABELLARIALES Tabellariaceae ASTERIONELLA Hassall bleakeleyi W.Smith freshwater formosa Hassall freshwater ralfsii W.Smith freshwater DIATOMA Bory ehrenbergii Kützing freshwater elongata (Lyngbye) C.Agardh freshwater moniliformis (Kützing) D.M.Williams freshwater tenuis C.Agardh freshwater vulgaris Bory freshwater MERIDION C.Agardh circulare (Greville) C.Agardh freshwater constrictum Ralfs freshwater OXYNEIS Round binalis (Ehrenberg) Round freshwater TABELLARIA Ehrenberg ex Kützing fenestrata (Lyngbye) Kützing freshwater flocculosa (Roth) Kützing freshwater TETRACYCLUS Ralfs emarginatus (Ehrenberg) W.Smith freshwater glans (Ehrenberg) F.W.Mills freshwater

22 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

THALASSIONEMATALES Thalassionemataceae THALASSIONEMA Grunow ex Mereschkowsky nitzschioides (Grunow) Mereschkowsky marine THALASSIOPHYSALES Catenulaceae AMPHORA Ehrenberg ex Kützing arenaria Donkin marine calumetica (Thomas ex Wolle) M.Peragallo freshwater copulata (Kützing) Schoeman & R.E.M.Archibald freshwater crassa W.Gregory marine elongata W.Gregory freshwater grevilleana W.Gregory marine inariensis Krammer freshwater/terrestr laevis W.Gregory marineial laevissima W.Gregory marine libyca Ehrenberg marine membranacea W.Smith brackish obtusa W.Gregory marine ocellata Donkin marine ovalis (Kützing) Kützing marine/freshwater parallelistriata Manguin ex Kociolek & Reviers freshwater pediculus (Kützing) Grunow freshwater pellucida W.Gregory marine robusta W.Gregory marine BACILLARIOPHYTA CLASSIS INCERTAE SEDIS BACILLARIOPHYTA ORDO INCERTAE SEDIS Bacillariophyta familia incertae sedis ACTINONEIS Cleve ex Mereschkowsky lorenziana (Grunow) Mereschkowsky freshwater COLLETONEMA Brébisson ex Kützing hibernicum O'Meara GLIWICZIA Kulikovskiy, Lange-Bertalot & Witkowski calcar (Cleve) M.Kulikovskiy, Lange-Bertalot & A.Witkowski freshwater LACUSTRIELLA Lange-Bertalot, Kulikovskiy & Metzeltin lacustris (W.Gregory) Lange-Bertalot & M.S.Kulikovskiy freshwater LIBELLUS P.T.Cleve grevillei (C.Agardh) Cleve marine NAVIGEIA L.N.Bukhtiyarova decussis (Østrup) Bukhtiyarova freshwater ignota (Krasske) Bukhtiyarova freshwater modica (Hustedt) Bukhtiyarova freshwater paludosa (Hustedt) Bukhtiyarova freshwater RALFSIELLA P.A.Sims, D.M.Williams & M.Ashworth smithii (Ralfs) P.A.Sims, D.M.Williams & M.Ashworth marine COSCINODISCOPHYCEAE AULACOSEIRALES Aulacoseiraceae AULACOSEIRA Thwaites alpigena (Grunow) Krammer freshwater ambigua (Grunow) Simonsen freshwater crenulata (Ehrenberg) Thwaites freshwater

23 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

distans (Ehrenberg) Simonsen freshwater excurrens (Nygaard) Simonsen freshwater fennoscandica (A.Cleve) R.Ross freshwater granulata (Ehrenberg) Simonsen freshwater islandica (O.Müller) Simonsen freshwater italica (Ehrenberg) Simonsen freshwater lacustris (Grunow) Krammer freshwater lirata (Ehrenberg) R.Ross freshwater perglabra (Østrup) E.Y.Haworth freshwater subarctica (O.Müller) E.Y.Haworth freshwater valida (Grunow) Krammer freshwater COSCINODISCALES Aulacodiscaceae AULACODISCUS Ehrenberg argus (Ehrenberg) A.Schmidt marine Coscinodiscaceae COSCINODISCUS Ehrenberg apiculatus Ehrenberg marine centralis Ehrenberg marine concinnus W.Smith marine/freshwater fimbriatus Ehrenberg marine gigas Ehrenberg marine gregoryi O'Meara marine marginatus Ehrenberg marine oculus-iridis (Ehrenberg) Ehrenberg marine perforatus Ehrenberg marine radiatus Ehrenberg marine subtilis Ehrenberg marine CRASPEDODISCUS Ehrenberg coscinodiscus (Ehrenberg) Ehrenberg marine SYMBOLOPHORA Ehrenberg amblyoceros (Ehrenberg) G.R.Hasle & P.A.Sims marine Heliopeltaceae ACTINOPTYCHUS Ehrenberg senarius (Ehrenberg) Ehrenberg marine Hemidiscaceae ACTINOCYCLUS Ehrenberg fulvus (W.Smith) Ralfs marine normanii (W.Gregory ex Greville) Hustedt marine octonarius Ehrenberg marine MELOSIRALES Hyalodiscaceae HYALODISCUS Ehrenberg cervinus T.Brightwell marine scoticus (Kützing) Grunow marine subtilis Bailey marine PODOSIRA Ehrenberg hormoides (Montagne) Kutzing marine montagnei Kützing marine stelligera (Bailey) A.Mann marine Melosiraceae

24 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

ANGUSTICOPULA Houk, Klee & H.Tanaka dickiei (Thwaites) Houk, Klee & H.Tanaka freshwater/terrestr ial MELOSIRA C.Agardh fennoscandica Cleve-Euler freshwater mikkelsenii Nygaard freshwater moniliformis C.Agardh marine/freshwater nummuloides C.Agardh marine undulata (Ehrenberg) Kützing freshwater varians C.Agardh freshwater wrightii O'Meara marine Orthoseiraceae ORTHOSEIRA Thwaites roeseana (Rabenhorst) Pfitzer freshwater/terrestr ial Pseudopodosiraceae PSEUDOPODOSIRA A.P.Jousé westii (W.Smith) Scheschukova-Poretzkaja & Gleser marine PARALIALES Paraliaceae PARALIA Heiberg sulcata (Ehrenberg) Cleve marine RHIZOSOLENIALES Rhizosoleniaceae PSEUDOSOLENIA B.G.Sundström calcar-avis (Schultze) B.G.Sundström marine RHIZOSOLENIA Brightwell morsa (W.West & G.S.West) W.West & G.S.West freshwater setigera Brightwell marine styliformis T.Brightwell marine UROSOLENIA Round & R.M.Crawford eriensis (H.L.Smith) Round & R.M.Crawford freshwater longiseta (O.Zacharias) Edlund & Stoermer freshwater STELLARIMALES Stellarimaceae STELLARIMA Hasle & P.A.Sims stellaris (Roper) G.R.Hasle & P.A.Sims marine STEPHANOPYXALES Stephanopyxidaceae EUPYXIDICULA S.Blanco & C.E.Wetzel turris (Greville) S.Blanco & C.E.Wetzel marine TRICERATIALES Triceratiaceae TRICERATIUM Ehrenberg favus Ehrenberg marine MEDIOPHYCEAE BIDDULPHIALES Biddulphiaceae BIDDULPHIA S.F.Gray alternans (Bailey) Van Heurck marine biddulphiana (J.E.Smith) Boyer marine CHAETOCEROTALES Chaetocerotaceae ACANTHOCERAS H.Honigmann zachariasii (Brun) Simonsen freshwater

25 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

CHAETOCEROS Ehrenberg diadema (Ehrenberg) Gran marine CYMATOSIRALES Cymatosiraceae CAMPYLOSIRA Grunow ex Van Heurck cymbelliformis (A.W.F.Schmidt) Grunow ex Van Heurck brackish EUPODISCALES Eupodiscaceae AULISCUS Ehrenberg sculptus (W.Smith) Brightwell marine ZYGOCEROS Ehrenberg rhombus Ehrenberg marine Odontellaceae AMPHITETRAS Ehrenberg antediluviana Ehrenberg marine ODONTELLA C.Agardh aurita (Lyngbye) C.Agardh marine turgida (Ehrenberg) Kützing marine HEMIAULALES Hemiaulaceae TRINACRIA Heiberg regina Heiberg marine Isthmiaceae ISTHMIA C.Agardh enervis Ehrenberg marine nervosa Kützing marine LITHODESMIALES Lithodesmiaceae TROPIDONEIS Cleve maxima (W.Gregory) Cleve marine STEPHANODISCALES Stephanodiscaceae BREVISIRA Krammer arentii (Kolbe) Krammer freshwater CYCLOSTEPHANOS Round dubius (Hustedt) Round freshwater invisitatus (M.H.Hohn & Hellermann) E.C.Theriot, Stoermer & Håkasson freshwater tholiformis Stoermer, Håkansson & Theriot freshwater CYCLOTELLA (Kützing) Brébisson atomus Hustedt freshwater meneghiniana Kützing marine/freshwater papillosa O'Meara freshwater radiosa (Grunow) Lemmermann freshwater striata (Kützing) Grunow freshwater DISCOSTELLA V.Houk & R.Klee nana (Hustedt) T.P.Chang pseudostelligera (Hustedt) Houk & Klee freshwater stelligera (Cleve & Grunow) Houk & Klee freshwater stelligeroides (Hustedt) Houk & Klee freshwater LINDAVIA (Schütt) De Toni & Forti antiqua (W.Smith) Nakov, Guillory, Julius, Theriot & Alverson comta (Kützing) Nakov, Gullory, Julius, Theriot & Alverson freshwater

26 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

glomerata (H.Bachmann) Adesalu & Julius freshwater schroeteri (Lemmermann) Nakov, Guillory, Julius, Theriot & Alverson freshwater PANTOCSEKIELLA K.T.Kiss & E.Ács comensis (Grunow) K.T.Kiss & E.Ács freshwater kuetzingiana (Thwaites) K.T.Kiss & E.Ács brackish ocellata (Pantocsek) K.T.Kiss & Ács freshwater rossii (H.Håkansson) K.T.Kiss & E.Ács freshwater STEPHANODISCUS Ehrenberg alpinus Hustedt freshwater astraea (Kützing) Grunow freshwater binderanus (Kützing) Krieger freshwater hantzschii Grunow marine/freshwater medius Håkansson freshwater minutulus (Kützing) Cleve & Möller freshwater neoastraea Håkansson & Hickel freshwater parvus Stoermer & Håkansson freshwater rotula (Kützing) Hendey marine/freshwater THALASSIOSIRALES Skeletonemataceae SKELETONEMA Greville subsalsum (Cleve-Euler) Bethge marine Thalassiosiraceae CONTICRIBRA Stachura-Suchoples & D.M.Williams guillardii (Hasle) K.Stachura-Suchoples & D.M.Williams marine weissflogii (Grunow) Stachura-Suchoples & D.M.Williams brackish THALASSIOSIRA Cleve decipiens (Grunow ex Van Heurck) E.G.Jørgensen marine eccentrica (Ehrenberg) Cleve marine gravida Cleve marine lacustris (Grunow) G.R.Hasle marine leptopus (Grunow) Hasle & G.Fryxell marine nordenskioeldii Cleve marine pseudonana Hasle & Heimdal marine TOXARIALES Toxariaceae TOXARIUM Bailey undulatum Bailey marine

27 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

CHAROPHYTA CHAROPHYCEAE CHARALES Characeae CHARA Linnaeus aspera C.L.Willdenow marine/freshwater canescens Loiseleur brackish connivens P.Salzmann ex A.Braun brackish contraria A.Braun ex Kützing freshwater denudata A.Braun freshwater hispida Linnaeus freshwater muscosa J.Groves & G.R.Bullock-Webster freshwater polyacantha A.Braun freshwater subspinosa Ruprecht freshwater tomentosa Linnaeus freshwater virgata Kützing marine/freshwater vulgaris Linnaeus freshwater LAMPROTHAMNIUM J.Groves papulosum (K.Wallroth) J.Groves brackish NITELLA C.Agardh mucronata (A.Braun) F.Miquel freshwater opaca (C.Agardh ex Bruzelius) C.Agardh freshwater tenuissima (Desvaux) Kützing freshwater translucens (Persoon) C.Agardh freshwater TOLYPELLA (A.Braun) A.Braun glomerata (Desvaux) Leonhardi freshwater prolifera (Ziz ex A.Braun) Leonhardi freshwater Feistiellaceae NITELLOPSIS Hy obtusa (N.A.Desvaux) J.Groves marine/freshwater COLEOCHAETOPHYCEAE CHAETOSPHAERIDIALES Chaetosphaeridiaceae CHAETOSPHAERIDIUM Klebahn globosum (Nordstedt) Klebahn freshwater COLEOCHAETALES Coleochaetaceae COLEOCHAETE Brébisson divergens Pringsheim freshwater irregularis Pringsheim freshwater pulvinata A.Braun freshwater scutata Brébisson freshwater soluta (Brébisson) Pringsheim freshwater CONJUGATOPHYCEAE (ZYGNEMATOPHYCEAE) DESMIDIALES Closteriaceae CLOSTERIUM Nitzsch ex Ralfs abruptum West freshwater acerosum Ehrenberg ex Ralfs freshwater aciculare T.West freshwater acutum Brébisson freshwater angustatum Kützing ex Ralfs freshwater

28 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

archerianum Cleve ex P.Lundell freshwater attenuatum Ralfs freshwater baillyanum (Brébisson ex Ralfs) Brébisson freshwater calosporum Wittrock freshwater ceratium Perty freshwater closterioides (Ralfs) A.Louis & Peeters freshwater cornu Ehrenberg ex Ralfs freshwater costatum Corda ex Ralfs freshwater decorum Brébisson freshwater dianae Ehrenberg ex Ralfs freshwater didymotocum Corda ex Ralfs freshwater directum W.Archer freshwater eboracense W.B.Turner freshwater ehrenbergii Meneghini ex Ralfs freshwater gracile Brébisson ex Ralfs freshwater hibernicum (West) A.J.Brook & D.M.Williamson freshwater idiosporum West & G.S.West freshwater incurvum Brébisson freshwater intermedium Ralfs freshwater jenneri Ralfs freshwater juncidum Ralfs freshwater kuetzingii Brébisson freshwater lagoense Nordstedt freshwater lanceolatum Kützing ex Ralfs freshwater leibleinii Kützing ex Ralfs freshwater limneticum Lemmermann freshwater lineatum Ehrenberg ex Ralfs freshwater lunula Ehrenberg & Hemprich ex Ralfs freshwater macilentum Brébisson freshwater moniliferum Ehrenberg ex Ralfs freshwater monotaenium W.Archer freshwater navicula (Brébisson) Lütkemüller freshwater parvulum Nägeli freshwater peracerosum F.Gay freshwater praelongum Brébisson freshwater pritchardianum W.Archer freshwater pronum Brébisson freshwater ralfsii Brébisson ex Ralfs freshwater rostratum Ehrenberg ex Ralfs freshwater setaceum Ehrenberg ex Ralfs freshwater strigosum Brébisson freshwater striolatum Ehrenberg ex Ralfs freshwater sublaterale Ruzicka freshwater subtile Brébisson freshwater subulatum (Kützing) Brébisson freshwater toxon West freshwater tumidum L.N.Johnson freshwater turgidum Ehrenberg ex Ralfs freshwater venus Kützing ex Ralfs freshwater Desmidiaceae

29 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

ACTINOTAENIUM (Nägeli) Teiling adelochondrum (Elfving) Teiling freshwater clevei (P.Lundell) Teiling freshwater colpopelta (Brébisson ex W.Archer) Compère freshwater crassiusculum (De Bary) Teiling freshwater cruciferum (De Bary) Teiling freshwater cucurbita (Brébisson ex Ralfs) Teiling freshwater cucurbitinum (Bisset) Teiling freshwater curtum (Brébisson ex Ralfs) Teiling ex Růžička & Pouzar freshwater didymocarpum (P.Lundell) Coesel & Delfos freshwater diplosporum (P.Lundell) Teiling freshwater gelidum (Wittrock ex De Toni) Ruzicka & Pouzar freshwater globosum (Bulnheim) Kurt Förster ex Compère freshwater hibernicum (West) Růžička freshwater inconspicuum (West & G.S.West) Teiling freshwater infractum (Messikommer) D.B.Williamson freshwater minutissimum (Nordstedt) Teiling freshwater mooreanum (W.Archer) Teiling freshwater obcuneatum (West) Teiling freshwater palangula (Brébisson ex Ralfs) Teiling freshwater perminutum (G.S.West) Teiling freshwater phymatosporum (Nordstedt) Kouwets & Coesel freshwater rufescens (Cleve) Teiling freshwater silvae-nigrae (Rabanus) Kouwets & Coesel freshwater spinospermum (Joshua) Kouwets & Coesel freshwater truncatum (Brébisson ex Ralfs) Teiling freshwater turgidum (Brébisson ex Ralfs) Teiling freshwater ARTHRODESMUS Ehrenberg ex Ralfs glaucescens Wittrock freshwater BAMBUSINA Kützing ex Kützing borreri (Ralfs) Cleve freshwater COSMARIUM Corda ex Ralfs abbreviatum Raciborski freshwater alpestre J.Roy & Bisset freshwater amoenum Brébisson ex Ralfs freshwater anceps P.Lundell freshwater angulosum Brébisson freshwater annulatum (Nägeli) De Bary freshwater arctoum Nordstedt freshwater arnellii Boldt freshwater asphaerosporum Wittrock freshwater binum Nordstedt freshwater bioculatum Brébisson ex Ralfs freshwater bipapillatum (West) West & G.S.West freshwater bipunctatum Børgesen freshwater biretum Brébisson ex Ralfs freshwater blyttii Wille freshwater boeckii Wille freshwater botrytis Meneghini ex Ralfs freshwater brebissonii Meneghini ex Ralfs freshwater broomei Thwaites ex Ralfs freshwater

30 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019 caelatum Ralfs freshwater calcareum Wittrock freshwater capitulum J.Roy & Bisset freshwater carinthiacum Lütkemuller freshwater commissurale Brébisson ex Ralfs freshwater connatum Brébisson ex Ralfs freshwater conspersum Ralfs freshwater contractum O.Kirchner freshwater corbula (Brébisson) Brébisson freshwater corriense Bisset ex J.Roy freshwater crenatum Ralfs ex Ralfs freshwater cristatum Ralfs freshwater cucumis Corda ex Ralfs freshwater cyclicum P.Lundell freshwater cylindricum Ralfs freshwater cymatium (West & G.S.West) Willi Krieger & Gerloff freshwater cymatonotophorum West freshwater cymatopleurum Nordstedt freshwater debaryi W.Archer freshwater decedens (Reinsch) Raciborski freshwater dentiferum Corda ex Nordstedt freshwater didymoprotupsum West & G.S.West freshwater difficile Lütkemüller freshwater dybowskii Gutwinski freshwater eductum J.Roy & Bisset freshwater elegantissimum P.Lundell freshwater entochondrum West & G.S.West freshwater erosum Delponte freshwater etchachanense J.Roy & Bisset freshwater excavatum Nordstedt freshwater exiguum W.Archer freshwater fontigenum Nordstedt freshwater formosulum Hoff freshwater furcatospermum West & G.S.West freshwater galeritum Nordstedt freshwater goniodes West & G.S.West freshwater granatum Brébisson ex Ralfs freshwater hammeri Reinsch freshwater hexalobum Nordstedt freshwater holmiense P.Lundell freshwater hornavanense Gutwinski freshwater humile Nordstedt ex De Toni freshwater impressulum Elfving freshwater inconspicuum West & G.S.West freshwater isthmium West freshwater isthmochondrum Nordstedt freshwater kjellmanii Wille freshwater laeve Rabenhorst freshwater lobatosporum W.Archer freshwater logiense Bisset freshwater maamense D.B.Williamson & D.M.John freshwater

31 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019 malinvernianum (Raciborski) Schmidle freshwater margaritatum (P.Lundell) J.Roy & Bisset freshwater margaritiferum Meneghini ex Ralfs freshwater melanosporum W.Archer & J.Roy freshwater meneghinii Brébisson ex Ralfs freshwater minutissimum W.Archer freshwater moerlianum Lütkemüller freshwater moniliforme Ralfs freshwater monomazum P.M.Lundell freshwater naegelianum Brébisson freshwater nasutum Nordstedt freshwater nitidulum De Notaris freshwater norimbergense Reinsch freshwater notabile Brébisson freshwater nuttallii West freshwater nymannianum Grunow freshwater obliquum Nordstedt freshwater obsoletum (Hantzsch) Reinsch freshwater obtusatum (Schmidle) Schmidle freshwater ochthodes Nordstedt freshwater odontopleurum W.Archer ex Roy & Bisset freshwater orbiculatum Ralfs ex Ralfs freshwater ordinatum (Børgesen) West & G.S.West freshwater ornatum Ralfs ex Ralfs freshwater orthostichum P.Lundell freshwater ovale Ralfs ex Ralfs freshwater pachydermum P.Lundell freshwater parvulum Brébisson freshwater perforatum P.Lundell freshwater perpusillum West freshwater phaseolus Brébisson ex Ralfs freshwater platyisthmum W.Archer freshwater plicatum Reinsch freshwater pokornyanum (Grunow) West & G.S.West freshwater polygonum (Nägeli) W.Archer freshwater porteanum W.Archer freshwater praemorsum Brébisson freshwater prominulum Raciborski freshwater promontorium West & G.S.West freshwater protractum (Nägeli) De Bary freshwater pseudarctoum Nordstedt freshwater pseudoamoenum Wille freshwater pseudoconnatum Nordstedt freshwater pseudoexiguum Raciborski freshwater pseudonitidulum Nordstedt freshwater pseudoprotuberans O.Kirchner freshwater pseudopyramidatum P.Lundell freshwater punctulatum Brébisson freshwater pygmaeum W.Archer freshwater pyramidatum Brébisson ex Ralfs freshwater quadratum Ralfs ex Ralfs freshwater

32 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019 quadridentatum West & G.S.West freshwater quadrifarium P.Lundell freshwater quadrum P.Lundell freshwater quasillus P.Lundell freshwater quinarium P.Lundell freshwater radiosum Wolle freshwater ralfsii Brébisson ex Ralfs freshwater rectangulare Grunow freshwater regnellii Wille freshwater regnesi Reinsch freshwater reinschii W.Archer freshwater reniforme (Ralfs) W.Archer freshwater repandum Nordstedt freshwater retusiforme (Wille) Gutwinski freshwater retusum (Perty) Rabenhorst freshwater sendtnerianum (Reinsch) Wolle freshwater sinostegos Schaarschmidt freshwater smolandicum P.Lundell freshwater speciosum P.Lundell freshwater sphaeroideum West freshwater sphagnicola West & G.S.West freshwater sphalerostichum Nordstedt freshwater sportella Brébisson ex Kützing freshwater subarctoum (Lagerheim) Raciborski freshwater subcostatum Nordstedt freshwater subcrenatum Hantzsch freshwater subcucumis Schmidle freshwater subdanicum West freshwater subgranatum (Nordstedt) Lütkemüller freshwater subjenisejense Grönblad freshwater subprotumidum Nordstedt freshwater subquadrans West & G.S.West freshwater subreinschii Schmidle freshwater subspeciosum Nordstedt freshwater subtumidum Nordstedt freshwater subundulatum Wille freshwater succisum West freshwater synthlibomenum West freshwater tatricum Raciborski freshwater tenue W.Archer freshwater tetrachondrum P.Lundell freshwater tetragonum (Nägeli) W.Archer freshwater tetraophthalmum Brébisson ex Ralfs freshwater thwaitesii Ralfs freshwater tinctum Ralfs freshwater trachypleurum P.Lundell freshwater trilobulatum Reinsch freshwater truncatellum (Perty) Rabenhorst freshwater tuberculatum W.Archer freshwater tumidum P.Lundell freshwater turneri Roy freshwater

33 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

turpinii Brébisson freshwater tyrolicum (Nordstedt) Krieger & Gerloff freshwater umbilicatum Lütkemüller freshwater undulatum Corda ex Ralfs freshwater variolatum P.Lundell freshwater venustum (Brébisson) W.Archer freshwater vexatum West freshwater visbyense Grönblad freshwater wittrockii P.Lundell freshwater woloszynskae Coesel & Meesters freshwater COSMOCLADIUM Brébisson constrictum (W.Archer) W.Archer ex Joshua freshwater hitchcockii (Wolle) G.M.Smith freshwater saxonicum De Bary freshwater subramosum Schmidle freshwater DESMIDIUM C.Agardh ex Ralfs aptogonum Brébisson ex Kützing freshwater grevillei (Kützing ex Ralfs) De Bary freshwater pseudostreptonema West & G.S.West freshwater quadrangulatum Ralfs ex Ralfs freshwater quadratum Nordstedt freshwater swartzii C.Agardh ex Ralfs freshwater DOCIDIUM Brébisson ex Ralfs asperum Brébisson ex Ralfs freshwater baculum Brébisson ex Ralfs freshwater nobile (P.G.Richter) P.Lundell freshwater undulatum Bailey freshwater EUASTRUM Ehrenberg ex Ralfs amoenum F.Gay freshwater ampullaceum Ralfs freshwater ansatum Ehrenberg ex Ralfs freshwater bidentatum Nägeli freshwater binale Ehrenberg ex Ralfs freshwater circulare Hassall ex Ralfs freshwater crassangulatum Børgesen freshwater crassicolle P.Lundell freshwater crassum Ralfs freshwater cuneatum Jenner freshwater didelta Ralfs freshwater dubium Nägeli freshwater elegans Ralfs freshwater elobatum (Lundell) J.Roy & Bisset freshwater erosum P.Lundell freshwater gayanum De Toni freshwater gemmatum Ralfs freshwater humerosum Ralfs freshwater inerme (Ralfs) P.Lundell freshwater insigne Hassall ex Ralfs freshwater insulare (Wittrock) J.Roy freshwater jenneri W.Archer freshwater luetkemuelleri F.Ducellier freshwater

34 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

montanum West & G.S.West freshwater obesum Joshua freshwater oblongum Ralfs freshwater pectinatum Brébisson ex Ralfs freshwater pictum Børgesen freshwater pingue Elfving freshwater pinnatum Ralfs freshwater pulchellum Brébisson freshwater sinuosum Lenormand ex W.Archer freshwater sublobatum Brébisson ex Ralfs freshwater turneri West freshwater validum West & G.S.West freshwater ventricosum P.Lundell freshwater verrucosum Ehrenberg ex Ralfs freshwater GROENBLADIA Teiling neglecta (Raciborski) Teiling freshwater undulata (Nordstedt) Kurt Förster freshwater HAPLOTAENIUM Bando minutum (Ralfs) Bando freshwater rectum (Delponte) Bando freshwater HEIMANSIA Coesel pusilla (L.Hilse) Coesel freshwater HYALOTHECA Ehrenberg ex Ralfs dissiliens Brébisson ex Ralfs freshwater indica W.B.Turner freshwater mucosa Ralfs freshwater MICRASTERIAS C.Agardh ex Ralfs americana Ehrenberg ex Ralfs freshwater apiculata Meneghini ex Ralfs freshwater brachyptera Lundell freshwater conferta Lundell freshwater crux-melitensis Ralfs freshwater denticulata Brébisson ex Ralfs freshwater fimbriata Ralfs freshwater furcata C.Agardh ex Ralfs freshwater jenneri Ralfs freshwater oscitans Ralfs freshwater papillifera Brébisson ex Ralfs freshwater pinnatifida Ralfs freshwater radiosa Ralfs freshwater rotata Ralfs freshwater thomasiana W.Archer freshwater truncata Brébisson ex Ralfs freshwater verrucosa Bisset freshwater OCTACANTHIUM (Hansgirg) Compère bifidum (Brébisson) Compère freshwater controversum (West & G.S.West) Compère freshwater ONYCHONEMA Wallich filiforme (Ralfs) J.Roy & Bisset freshwater OOCARDIUM Nägeli stratum Nägeli freshwater

35 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

PLEUROTAENIUM Nägeli clavatum (Kützing) De Bary freshwater coronatum (Brébisson) Rabenhorst freshwater crenulatum (Ehrenberg ex Ralfs) Rabenhorst freshwater ehrenbergii (Ralfs) De Bary freshwater maximum (Reinsch) P.Lundell freshwater nodosum (Bailey ex Ralfs) P.Lundell freshwater nodulosum (Brébisson ex Ralfs) Rabenhorst freshwater trabecula Nägeli freshwater tridentulum (Wolle) West freshwater truncatum (Brébisson ex Ralfs) Nägeli freshwater SPHAEROZOSMA Corda ex Ralfs aubertianum West freshwater vertebratum Brébisson ex Ralfs freshwater SPONDYLOSIUM Brébisson ex Kützing ellipticum West & G.S.West freshwater javanicum (Gutwinski) Grönblad freshwater panduriforme (Heimerl) Teiling freshwater papillosum West & G.S.West freshwater planum (Wolle) West & G.S.West freshwater pulchellum (W.Archer) W.Archer freshwater pulchrum (Bailey) W.Archer freshwater pygmaeum Cooke freshwater secedens (De Bary) W.Archer freshwater tetragonum West & G.S.West freshwater STAURASTRUM Meyen ex Ralfs aculeatum Meneghini ex Ralfs freshwater alternans Brébisson freshwater anatinum Cooke & Wills freshwater arachne Ralfs ex Ralfs freshwater archeri West freshwater arctiscon (Ehrenberg ex Ralfs) P.Lundell freshwater arcuatum Nordstedt freshwater arnellii Boldt freshwater asperum Brébisson freshwater aversum P.Lundell freshwater avicula Brébisson freshwater bacillare Brébisson ex Ralfs freshwater barbaricum West & G.S.West freshwater bibrachiatum Reinsch freshwater bieneanum Rabenhorst freshwater bifidum Brébisson ex Ralfs freshwater boreale West & G.S.West freshwater botrophilum Wolle freshwater brachiatum Ralfs ex Ralfs freshwater brasiliense Nordstedt freshwater brevispina Brébisson freshwater bulbosum (West) Coesel freshwater capitulum Brébisson freshwater cerastes P.Lundell freshwater chaetoceras (Schröder) G.M.Smith freshwater

36 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019 chavesii Bohlin freshwater cingulum (West & G.S.West) G.M.Smith freshwater clevei (Wittrock) J.Roy freshwater controversum Brébisson freshwater cornutum W.Archer freshwater cosmarioides Nordstedt freshwater crenulatum (Nägeli) Delponte freshwater cristatum (Nägeli) W.Archer freshwater cyrtocerum Brébisson freshwater denticulatum (Nägeli) W.Archer freshwater diacanthum A.Lemaire freshwater dilatatum Ehrenberg ex Ralfs freshwater dispar Brébisson freshwater disputatum West & G.S.West freshwater donardense West & G.S.West freshwater dorsidentiferum West & G.S.West freshwater duacense West & G.S.West freshwater echinatum Brébisson ex Ralfs freshwater elongatum J.Barker freshwater erasum Brébisson freshwater forficulatum P.Lundell freshwater furcatum Brébisson freshwater furcigerum (Brébisson) W.Archer freshwater gatniense West & G.S.West freshwater gracile Ralfs ex Ralfs freshwater granulosum Ralfs freshwater haaboeliense Wille freshwater hexacerum Wittrock freshwater hibernicum West freshwater hirsutum Ehrenberg ex Ralfs freshwater hystrix Ralfs freshwater inconspicuum Nordstedt freshwater inflexum Brébisson freshwater iotanum Wolle freshwater kouwetsii Coesel freshwater laeve Ralfs freshwater laevispinum Bisset freshwater lanceolatum W.Archer freshwater lapponicum (Schmidle) Grönblad freshwater longipes (Nordstedt) Teiling freshwater longispinum (Bailey) W.Archer freshwater maamense W.Archer freshwater manfeldtii Delponte freshwater margaritaceum Meneghini ex Ralfs freshwater megalonotum Nordstedt freshwater merianii Reinsch freshwater mesoleium W.Archer freshwater micron West & G.S.West freshwater minutissimum Averswald freshwater monticulosum Brébisson freshwater muticum Brébisson ex Ralfs freshwater

37 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

natator West freshwater neglectum G.S.West freshwater ophiura P.Lundell freshwater orbiculare Meneghini ex Ralfs freshwater ornatum W.B.Turner freshwater oxyacanthum W.Archer freshwater pachyrhynchum Nordstedt freshwater paradoxum Meyen ex Ralfs freshwater pelagicum West & G.S.West freshwater picum West & G.S.West freshwater pileolatum Brébisson freshwater pingue Teiling freshwater polymorphum Brébisson freshwater polytrichum (Perty) Rabenhorst freshwater proboscideum (Brébisson) W.Archer freshwater pseudopelagicum West & G.S.West freshwater pseudotetracerum (Nordstedt) West & G.S.West freshwater punctulatum Brébisson freshwater pungens Brébisson freshwater pyramidatum West freshwater quadrangulare Brébisson freshwater rostratum Raciborski freshwater scabrum Brébisson freshwater sebaldi Reinsch freshwater senarium Ralfs freshwater setigerum Cleve freshwater sexangulare (Bulnheim) Rabenhorst freshwater sexcostatum Brébisson ex Ralfs freshwater simonyi Heimerl freshwater sinense Lütkemüller freshwater smithii Teiling freshwater spongiosum Brébisson ex Ralfs freshwater stellatum Reinsch freshwater striolatum (Nägeli) W.Archer freshwater subcruciatum Cooke & Wills freshwater subgracillimum West & G.S.West freshwater suborbiculare West & G.S.West freshwater subpygmaeum West freshwater teliferum Ralfs freshwater tetracerum Ralfs ex Ralfs freshwater tohopekaligense Wolle freshwater trachygonum West freshwater trachynotum West freshwater turgescens De Notaris freshwater verticillatum W.Archer freshwater vestitum Ralfs freshwater STAURODESMUS Teiling aristiferus (Ralfs) Tomasson freshwater bulnheimii (Raciborski) Round & A.J.Brook freshwater connatus (P.Lundell) Thomasson freshwater controversus (West & G.S.West) Teiling freshwater

38 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

convergens (Ehrenberg ex Ralfs) S.Lillieroth freshwater corniculatus (P.Lundell) Teiling freshwater crassus (West & G.S.West) S.Lillieroth freshwater cuspidatus (Brébisson) Teiling freshwater cuspidicurvatus Coesel & Meesters freshwater dejectus (Brébisson) Teiling freshwater dickiei (Ralfs) S.Lillieroth freshwater extensus (O.F.Andersson) Teiling freshwater glaber (Ralfs) Teiling freshwater grandis (Bulnheim) Teiling freshwater incus (Hassal ex Ralfs) Teiling freshwater megacanthus (P.Lundell) Thunmark freshwater mucronatus (Nägeli) Thomasson freshwater octocornis (Ehrenberg ex Ralfs) Stastny, Skaloud & Neustupa freshwater omearae (W.Archer) Teiling freshwater phimus (W.B.Turner) Thomasson freshwater pterosporus (P.Lundell) Bourrelly freshwater ralfsii (West) Tomaszewicz freshwater spencerianus (Nordstedt) Teiling freshwater subtriangularis (Borge) Teiling freshwater subulatus (Kützing) Croasdale freshwater triangularis (Lagerheim) Teiling freshwater validus (West & G.S.West) Thomasson freshwater TEILINGIA Bourrelly excavata (Ralfs ex Ralfs) Bourrelly freshwater granulata (J.Roy & Bisset) Bourrelly freshwater TETMEMORUS Ralfs ex Ralfs brebissonii Ralfs freshwater granulatus Brébisson ex Ralfs freshwater laevis Ralfs ex Ralfs freshwater XANTHIDIUM Ehrenberg ex Ralfs aculeatum Ehrenberg ex Ralfs freshwater antilopaeum Kützing freshwater apiculiferum West freshwater armatum Brébisson ex Ralfs freshwater bisenarium Ehrenberg freshwater brebissonii Ralfs freshwater concinnum W.Archer freshwater cristatum Brébisson ex Ralfs freshwater fasciculatum Ehrenberg ex Ralfs freshwater impar (J.P.Jacobsen) Deflandre freshwater robinsonianum W.Archer freshwater smithii W.Archer freshwater subhastiferum West freshwater tenuissimum (W.Archer) W.B.Turner freshwater tumidum (Ralfs) Stastny, Skaloud & Neustupa freshwater variabile (Nordstedt) West & G.S.West freshwater Gonatozygaceae GONATOZYGON De Bary aculeatum W.N.Hastings freshwater brebissonii De Bary freshwater

39 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

kinahanii (W.Archer) Rabenhorst freshwater monotaenium De Bary freshwater Peniaceae PENIUM Brébisson ex Ralfs cylindrus Brébisson ex Ralfs freshwater exiguum West freshwater libellula (Focke ex Nordstedt) Nordstedt freshwater margaritaceum Brébisson freshwater polymorphum (Perty) Perty freshwater spirostriolatum J.Barker freshwater ZYGNEMATALES Mesotaeniaceae CYLINDROCYSTIS Meneghini ex De Bary brebissonii (Ralfs) De Bary freshwater crassa De Bary freshwater cushleckae A.J.Brook freshwater gracilis I.Hirn freshwater jenneri (Ralfs) West & G.S.West freshwater obesa West & G.S.West freshwater MESOTAENIUM Nägeli chlamydosporum De Bary freshwater degreyi W.B.Turner freshwater endlicherianum Nägeli freshwater macrococcum (Kützing ex Kützing) J.Roy & Bisset freshwater mirificum W.Archer freshwater NETRIUM (Nägeli) Itzigsohn & Rothe digitus (Brébisson ex Ralfs) Itzigsohn & Rothe freshwater naegelii (Brébisson ex W.Archer) West freshwater oblongum (De Bary) Lütkemüller freshwater PLANOTAENIUM (Ohtani) Petlovany & Palamar-Mordvintseva interruptum (Brébisson ex Ralfs) Petlovany & Palamar-Mordvintseva freshwater ROYA West & G.S.West anglica G.S.West freshwater cambrica West & G.S.West freshwater obtusa (Brébisson) West & G.S.West freshwater pseudoclosterium (J.Roy) West & G.S.West freshwater SPIROTAENIA Brébisson condensata Brébisson freshwater endospira W.Archer freshwater minuta Thuret freshwater tenerrima W.Archer freshwater truncata W.Archer freshwater TORTITAENIA Brook acuta (Hilse) Palamar-Mordvinsteva freshwater obscura (Ralfs) Brook freshwater trabeculata (A.Braun) A.J.Brook freshwater Zygnemataceae MOUGEOTIA C.Agardh capucina C.Agardh freshwater elegantula Wittrock freshwater genuflexa (Roth) C.Agardh freshwater

40 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

gracillima (Hassall) Wittrock freshwater laevis (Kützing) W.Archer freshwater nummuloides (Hassall) De Toni freshwater parvula Hassall freshwater quadrata Randhawa freshwater robusta (De Bary) Wittrock freshwater scalaris Hassall freshwater ventricosa (Wittrock) Collins freshwater viridis (Kützing) Wittrock freshwater SIROGONIUM Kützing sticticum (Smith) Kützing freshwater SPIROGYRA Link bellis (Hassall) P.Crouan & H.Crouan freshwater calospora Cleve freshwater cataeniformis (Hassall) Kützing freshwater condensata (Vaucher) Dumortier freshwater decimina (O.F.Müller) Dumortier freshwater elongata (Vaucher) Dumortier freshwater gracilis Kützing freshwater hyalina Cleve freshwater inflata (Vaucher) Dumortier freshwater majuscula Kützing freshwater nitida (O.F.Müller) Leiblein freshwater porticalis (O.F.Müller) Dumortier freshwater setiformis (Roth) Martens ex Meneghini freshwater varians (Hassall) Kützing freshwater TRANSEAUINA Guiry glyptosperma (De Bary) Guiry freshwater ZYGNEMA C.Agardh cruciatum (Vaucher) C.Agardh freshwater leiospermum De Bary freshwater momoniense West freshwater pectinatum (Vaucher) C.Agardh freshwater stellinum (O.F.Müller) C.Agardh freshwater ZYGOGONIUM Kützing didymum Rabenhorst freshwater ericetorum Kützing freshwater KLEBSORMIDIOPHYCEAE KLEBSORMIDIALES Elakatotrichaceae ELAKATOTHRIX Wille parvula (W.Archer) Hindák freshwater Klebsormidiaceae KLEBSORMIDIUM P.C.Silva, Mattox & W.H.Blackwell flaccidum (Kützing) P.C.Silva, K.R.Mattox & W.H.Blackwell freshwater/terrestr subtile (Kützing) Mikhailyuk, Glaser, Holzinger & Karsten terrestrialial

41 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

CHLOROPHYTA CHLOROPHYCEAE CHAETOPHORALES Aphanochaetaceae THAMNIOCHAETE F.Gay aculeata West & G.S.West freshwater Chaetophoraceae CHAETOPHORA F.Schrank dilatata Hassal freshwater lobata Schrank freshwater tuberculosa (Roth) C.Agardh freshwater CHAETOPHOROPSIS B.Wen Liu, Qian Xiong, X.Dong Liu, Z.Yu Hu & G.Xing Liu elegans (Roth) B.Wen Liu, Qian Xiong, X.Dong Liu, Z.Yu Hu & G.Xiang Liu pisiformis (Roth) B.Wen Liu, Qian Xiong, X.Dong Liu, Z.Yu Hu & G..Xiang Liu freshwater DRAPARNALDIA Bory glomerata (Vaucher) C.Agardh freshwater mutabilis (Roth) Bory freshwater GONGROSIRA Kützing viridis (Kützing) De Toni freshwater HERPOSTEIRON Nägeli confervicola Nägeli freshwater MYXONEMA E.M.Fries protensum (Dillwyn) Rabenhorst freshwater PLEUROCOCCUS Meneghini tectorum (Kützing) Trevisan marine/freshwater STIGEOCLONIUM Kützing amoenum Kützing freshwater nanum (Dillwyn) Kützing freshwater subsecundum (Kützing) Kützing freshwater tenue (C.Agardh) Kützing freshwater CHLAMYDOMONADALES Characiochloridaceae CHLAMYDOPODIUM Ettl & Komárek sieboldii (A.Braun) Tsarenko Brackish Chlorochytriaceae CHLOROCHYTRIUM Cohn cohnii E.P.Wright marine/freshwater lemnae Cohn freshwater Chlorococcaceae CHLOROCOCCUM Meneghini hypnosporum Starr terrestrial infusionum (Schrank) Meneghini freshwater/terrestr submarinum Ålvik marine ial Chlorosarcinaceae CHLOROSARCINOPSIS Herndon angulosa (Corda) Starmach None Goniaceae GONIUM O.F.Müller pectorale O.F.Müller freshwater Haematococcaceae STEPHANOSPHAERA Cohn pluvialis Cohn freshwater

42 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

Palmellaceae INODERMA Kützing lamellosum Kützing freshwater PALMELLA Lyngbye mucosa Kützing freshwater Palmellopsidaceae CHLAMYDOCAPSA Fott planctonica (West & G.S.West) Fott freshwater GLOEOCOCCUS A.Braun mucosus A.Braun freshwater PSEUDOSPHAEROCYSTIS Woronichin lacustris (Lemmermann) Nováková freshwater SPHAERELLOCYSTIS Ettl ampla (Kützing) Nováková freshwater Protosiphonaceae PROTOSIPHON Klebs botryoides (Kützing) Klebs terrestrial Sphaerocystidaceae SPHAEROCYSTIS Chodat schroeteri Chodat terrestrial Spondylomoraceae SPONDYLOMORUM Ehrenberg quaternarium Ehrenberg freshwater Tetrasporaceae APIOCYSTIS Nägeli brauniana Nägeli freshwater ASKENASYELLA Schmidle conferta (West & G.S.West) West & G.S.West freshwater TETRASPORA Link ex Desvaux cylindrica (Wahlenberg) C.Agardh freshwater flava Hassall freshwater gelatinosa (Vaucher) Desvaux freshwater lubrica (Roth) C.Agardh freshwater Volvocaceae EUDORINA Ehrenberg elegans Ehrenberg freshwater PANDORINA Bory morum (O.F.Müller) Bory freshwater VOLVOX Linnaeus aureus Ehrenberg freshwater OEDOGONIALES Oedogoniaceae BULBOCHAETE C.Agardh crassa Pringsheim freshwater crenulata Pringsheim freshwater elatior Pringsheim ex Hirn freshwater gigantea Pringsheim ex Hirn freshwater insignis Pringsheim ex Hirn freshwater intermedia De Bary ex Hirn freshwater minor A.Braun ex Hirn freshwater mirabilis Wittrock ex Hirn freshwater nordstedtii Wittrock ex Hirn freshwater

43 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

pygmaea Pringsheim ex Hirn freshwater setigera C.Agardh ex Hirn freshwater OEDOGONIUM Link ex Hirn acrosporum De Bary ex Hirn freshwater areschougii Wittrock ex Hirn freshwater borisianum Wittrock ex Hirn freshwater braunii Kützing ex Hirn freshwater calcareum Cleve & Wittrock freshwater capillare Kützing ex Hirn freshwater cleveanum Wittrock ex Hirn freshwater crispum Wittrock ex Hirn freshwater cryptoporum Wittrock ex Hirn freshwater depressum Pringsheim ex Hirn freshwater echinospermum A.Braun ex Hirn freshwater excisum Wittrock & P.Lundell ex Hirn freshwater hirnii Gutwinski ex Hirn freshwater itzigsohnii De Bary ex Hirn freshwater landsboroughii Wittrock ex Hirn freshwater londinense Wittrock ex Hirn freshwater longicolle Nordstedt ex Hirn freshwater macrandrium Wittrock ex Hirn freshwater pilosporum West ex Hirn freshwater pringsheimii C.E.Cramer ex Hirn freshwater punctatostriatum De Bary ex Hirn freshwater rothii Pringsheim ex Hirn freshwater suecicum Wittrock ex Hirn freshwater tumidulum Wittrock ex Hirn freshwater undulatum A.Braun ex Hirn freshwater SPHAEROPLEALES Characiaceae CHARACIUM A. Braun angustum A.Braun freshwater debaryanum (Reinsch) De Toni freshwater epipyxis Hermann freshwater heteromorphum (Reinsch) Wolle freshwater marinum Kjellman marine ornithocephalum A.Braun freshwater phacoides Hermann freshwater SYKIDION E.P.Wright dyeri E.P.Wright marine Cylindrocapsaceae CYLINDROCAPSA Reinsch involuta Reinsch freshwater nuda Reinsch freshwater Hydrodictyaceae PARAPEDIASTRUM E.Hegewald biradiatum (Meyen) E.Hegewald None PEDIASTRUM Meyen angulosum Ehrenberg ex Meneghini freshwater braunii Wartmann freshwater duplex Meyen freshwater

44 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

integrum Nägeli freshwater PSEUDOPEDIASTRUM E.Hegewald boryanum (Turpin) E.Hegewald SORASTRUM Kützing spinulosum Nägeli freshwater STAURIDIUM Corda tetras (Ehrenberg) E.Hegewald freshwater/terrestr ial TETRAËDRON Kützing caudatum (Corda) Hansgirg freshwater minimum (A.Braun) Hansgirg terrestrial trigonum (Nägeli) Hansgirg freshwater TETRAPEDIA Reinsch reinschiana W.Archer freshwater Microsporaceae MICROSPORA Thuret abbreviata (Rabenhorst) Lagerheim freshwater amoena (Kützing) Rabenhorst freshwater floccosa (Vaucher) Thuret freshwater vulgaris Rabenhorst freshwater wittrockii (Wille) Lagerheim freshwater Neochloridaceae BOTRYOSPHAERELLA P.C.Silva sudetica (Lemmermann) P.C.Silva freshwater GOLENKINIA Chodat paucispina West & G.S.West freshwater Radiococcaceae GLOEOCYSTIS Nägeli adnata Nägeli None botryoides (Kützing) Nägeli freshwater rupestris Rabenhorst Freshwater/Terres vesiculosa Nägeli freshwater/terrestrtrial ial PALMODICTYON Kützing varium (Nägeli) Lemmermann freshwater SPOROTETRAS Butcher polydermatica (Kützing) Kostikov, Darienko, Lukesová & L.Hoffmann freshwater Scenedesmaceae COELASTRUM Nägeli cambricum W.Archer freshwater microporum Nägeli freshwater proboscideum Bohlin freshwater pulchrum Schmidle freshwater sphaericum Nägeli freshwater DESMODESMUS (Chodat) S.S.An, T.Friedl & E.Hegewald denticulatus (Lagerheim) S.S.An, T.Friedl & E.Hegewald freshwater dispar (Brébisson) E.Hegewald freshwater hystrix (Lagerheim) E.Hegewald freshwater DIMORPHOCOCCUS Braun lunatus A.Braun freshwater HARIOTINA P.A.Dangeard reticulata P.A.Dangeard freshwater

45 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

SCENEDESMUS Meyen obtusus Meyen freshwater quadricauda (Turpin) Brébisson freshwater TETRADESMUS G.M.Smith obliquus (Turpin) M.J.Wynne freshwater TETRASTRUM Chodat heteracanthum (Nordstedt) Chodat freshwater WILLEA Schmidle rectangularis (A.Braun) D.M.John, M.J.Wynne & P.M.Tsarenko freshwater Schizochlamydaceae SCHIZOCHLAMYS Braun ex Kützing gelatinosa A.Braun freshwater Selenastraceae ANKISTRODESMUS Corda falcatus (Corda) Ralfs freshwater/terrestr spiralis (W.B.Turner) Lemmermannial freshwater KIRCHNERIELLA Schmidle lunaris (Kirchner) Möbius freshwater obesa (West) West & G.S.West freshwater MESSASTRUM T. S.Garcia gracile (Reinsch) T.S.Garcia freshwater MONORAPHIDIUM Komárková-Legnerová convolutum (Corda) Komárková-Legnerová freshwater QUADRIGULA Printz pfitzeri (Schröder) G.M.Smith freshwater SELENASTRUM Reinsch bibraianum Reinsch freshwater Treubariaceae TREUBARIA C.Bernard setigera (W.Archer) G.M.Smith freshwater PYRAMIMONADOPHYCEAE PYRAMIMONADALES Pyramimonadaceae HALOSPHAERA F.Schmitz viridis F.Schmitz marine TREBOUXIOPHYCEAE CHLORELLALES Chlorellaceae CHLORELLA Beyerinck [Beijerinck] miniata (Kützing) Oltmanns terrestrial CLOSTERIOPSIS Lemmermann longissima (Lemmermann) Lemmermann freshwater DICTYOSPHAERIUM Nägeli ehrenbergianum Nägeli freshwater reniforme Bulnheim freshwater GEMINELLA Turpin interrupta Turpin freshwater mutabilis (Brébisson) Wille freshwater GLOEOTILA Kützing protogenita Kützing freshwater MICRACTINIUM Fresenius pusillum Fresenius freshwater

46 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

MUCIDOSPHAERIUM C.Bock, Proschold & Krienitz pulchellum (H.C.Wood) C.Bock, Proschold & Krienitz freshwater Eremosphaeraceae NEGLECTELLA Vodenicarov & Benderliev solitaria (Wittrock) Stenclová & Kastovsky freshwater Oocystaceae DACTYLOCOCCUS Nägeli infusionum Nägeli freshwater EREMOSPHAERA De Bary gigas (W.Archer) Fott & Kalina terrestrial viridis De Bary freshwater GLOCHIOCOCCUS De Toni aciculiferus (Lagerheim) P.C.Silva freshwater NEPHROCYTIUM Nägeli agardhianum Nägeli freshwater lunatum West freshwater OOCYSTIS Nägeli ex A.Braun apiculata West freshwater elliptica West freshwater geminata Nägeli ex A.Braun freshwater lacustris Chodat freshwater marssonii Lemmermann freshwater naegelii A.Braun marine/freshwater nodulosa West & G.S.West freshwater panduriformis West & G.S.West freshwater parva West & G.S.West freshwater TROCHISCIA Kützing reticularis (Reinsch) Hansgirg freshwater/terrestr MICROTHAMNIALES ial Microthamniaceae MICROTHAMNION Nägeli kuetzingianum Nägeli ex Kützing freshwater/terrestr strictissimum Rabenhorst freshwaterial PRASIOLALES Prasiolaceae DESMOCOCCUS F.Brand olivaceus (Persoon ex Acharius) J.R.Laundon terrestrial PRASIOLA (C.Agardh) Meneghini calophylla (Carmichael ex Greville) Kützing terrestrial crispa (Lightfoot) Kützing terrestrial furfuracea (Mertens ex Hornemann) Trevisan terrestrial stipitata Suhr ex Jessen marine ROSENVINGIELLA P.C.Silva polyrhiza (Rosenvinge) P.C.Silva marine/terrestrial radicans (Kützing) Rindi, L.McIvor & Guiry terrestrial SCHIZOGONIUM Kützing thermale Kützing freshwater STICHOCOCCUS Nägeli bacillaris Nägeli ubiquitous TREBOUXIALES Botryococcaceae

47 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

BOTRYOCOCCUS Kützing braunii Kützing freshwater calcareus West freshwater neglectus (West & G.S.West) J.Komárek & P.Marvan freshwater protuberans West & G.S.West freshwater TREBOUXIOPHYCEAE ORDO INCERTAE SEDIS Trebouxiophyceae incertae sedis CHLOROIDIUM Nadson ellipsoideum (Gerneck) Darienko, Gustavs, Mudimu, Menendez, Schumann, Karsten, Friedl & Freshwater/Terres Proschold trial CRUCIGENIA Morren cruxmichaeli (Reinsch) Playfair freshwater quadrata Morren freshwater LEMMERMANNIA Chodat tetrapedia (Kirchner) Lemmermann freshwater ULVOPHYCEAE BRYOPSIDALES Bryopsidaceae BRYOPSIS J.V.Lamouroux hypnoides J.V.Lamouroux marine plumosa (Hudson) C.Agardh marine Codiaceae CODIUM Stackhouse adhaerens C.Agardh marine bursa (Olivi) C.Agardh marine decorticatum (Woodward) M.Howe marine fragile (Suringar) Hariot marine tomentosum Stackhouse marine vermilara (Olivi) Delle Chiaje marine Derbesiaceae DERBESIA Solier marina (Lyngbye) Solier marine tenuissima (Moris & De Notaris) P.Crouan & H.Crouan marine Ostreobiaceae OSTREOBIUM Bornet & Flahault quekettii Bornet & Flahault marine CLADOPHORALES Cladophoraceae CHAETOMORPHA Kützing aerea (Dillwyn) Kützing marine/freshwater ligustica (Kützing) Kützing marine/freshwater linum (O.F.Müller) Kützing marine/freshwater litorea Harvey marine melagonium (F.Weber & D.Mohr) Kützing marine tortuosa (Dillwyn) Kleen marine tortuosa (Dillwyn) Kleen marine CLADOPHORA Kützing albida (Nees) Kutzing marine coelothrix Kützing marine dalmatica Kützing marine flexuosa (O.F.Müller) Kützing marine fracta (O.F.Müller ex Vahl) Kützing marine glomerata (Linnaeus) Kützing marine/freshwater

48 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

gracilis Kützing marine hutchinsiae (Dillwyn) Kützing marine laetevirens (Dillwyn) Kützing marine lehmanniana (Lindenberg) Kützing marine prolifera (Roth) Kützing marine refracta Kützing marine retroflexa (Bonnemaison ex P.Crouan & H.Crouan) Hamel marine rivularis (Linnaeus) Kuntze freshwater rupestris (Linnaeus) Kützing marine sericea (Hudson) Kützing marine vadorum (Areschoug) Kützing marine vagabunda (Linnaeus) Hoek marine LYCHAETE J.Agardh battersii (C.Hoek) M.J.Wynne marine pellucida (Hudson) M.J.Wynne marine pygmaea (Reinke) M.J.Wynne marine rhodolithicola (Leliaert) M.J.Wynne marine RHIZOCLONIUM Kützing hieroglyphicum (C.Agardh) Kützing marine riparium (Roth) Harvey marine/freshwater tortuosum (Dillwyn) Kützing marine Okellyaceae OKELLYA Leliaert & Rueness curvata (Printz) Leliaert & Rueness marine Pithophoraceae AEGAGROPILA Kützing linnaei Kützing marine/freshwater IGNATIALES Ignatiaceae PSEUDOCHARACIUM Korshikov obtusum (A.Braun) Petry-Hesse freshwater OLTMANNSIELLOPSIDALES Oltmannsiellopsidaceae HALOCHLOROCOCCUM P.J.L.Dangeard ex Guiry moorei (N.L.Gardner) Kornmann & Sahling ex Guiry marine SCOTINOSPHAERALES Scotinosphaeraceae SCOTINOSPHAERA Klebs paradoxa Klebs freshwater TRENTEPOHLIALES Trentepohliaceae PHYCOPELTIS Millardet arundinacea (Montagne) De Toni terrestrial TRENTEPOHLIA C.Martius abietina (Flotow ex Kützing) Hansgirg terrestrial aurea (Linnaeus) C.Martius terrestrial calamicola (Zeller) De Toni & Levi terrestrial jolithus (Linnaeus) Wallroth terrestrial umbrina (Kützing) Bornet terrestrial ULOTRICHALES Gayraliaceae

49 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

GAYRALIA K.L.Vinogradova oxysperma (Kützing) K.L.Vinogradova ex Scagel et al. marine/freshwater oxysperma (Kützing) K.L.Vinogradova ex Scagel et al. marine/freshwater Gomontiaceae EUGOMONTIA Kornmann sacculata Kornmann marine GOMONTIA Bornet & Flahault polyrhiza (Lagerheim) Bornet & Flahault marine Helicodictyaceae PROTODERMA Kützing viride Kützing marine/freshwater Monostromataceae MONOSTROMA Thuret bullosum (Roth) Thuret freshwater grevillei (Thuret) Wittrock marine Ulotrichaceae ACROSIPHONIA J.Agardh arcta (Dillwyn) Gain marine CAPSOSIPHON Gobi fulvescens (C.Agardh) Setchell & N.L.Gardner marine SPONGOMORPHA Kützing aeruginosa (Linnaeus) Hoek marine ULOTHRIX Kützing albicans Kützing freshwater flacca (Dillwyn) Thuret marine implexa (Kützing) Kützing marine/freshwater laetevirens (Harvey) Collins marine oscillarina Kützing freshwater/terrestr speciosa (Carmichael)ial Kützing marine subflaccida Wille freshwater tenerrima (Kützing) Kützing freshwater/terrestr tenuissima Kützing marine/freshwaterial zonata (F.Weber & Mohr) Kützing freshwater UROSPORA Areschoug bangioides (Harvey) Holmes & Batters marine penicilliformis (Roth) Areschoug marine wormskioldii (Mertens) Rosenvinge marine ULVALES Bolbocoleonaceae BOLBOCOLEON Pringsheim piliferum Pringsheim marine Kornmanniaceae BLIDINGIA Kylin marginata (J.Agardh) P.J.L.Dangeard ex Bliding marine minima (Nägeli ex Kützing) Kylin marine PSEUDENDOCLONIUM Wille fucicola (Rosenvinge) R.Nielsen marine marinum (Reinke) Aleem & E.Schulz marine submarinum Wille marine TELLAMIA Batters contorta Batters marine Phaeophilaceae

50 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

PHAEOPHILA Hauck dendroides (P.Crouan & H.Crouan) Batters marine Ulvaceae OCHLOCHAETE Thwaites hystrix Thwaites marine/freshwater PERCURSARIA Bory percursa (C.Agardh) Rosenvinge marine/freshwater ULVA Linnaeus californica Wille marine clathrata (Roth) C.Agardh marine compressa Linnaeus marine/freshwater flexuosa Wulfen marine/freshwater gigantea (Kützing) Bliding marine intestinalis Linnaeus marine lactuca Linnaeus marine linza Linnaeus marine prolifera O.F.Müller marine pseudocurvata Koeman & Hoek marine pseudorotundata Cormaci, G.Furnari & Alongi marine ralfsii (Harvey) Le Jolis marine rigida C.Agardh marine torta (Mertens) Trevisan marine ULVARIA Ruprecht obscura (Kützing) Gayral ex Bliding marine splendens (Ruprecht) K.L.Vinogradova marine UMBRAULVA E.H.Bae & I.K.Lee dangeardii M.J.Wynne & G.Furnari marine Ulvellaceae EPICLADIA Reinke flustrae Reinke marine perforans (Huber) R.Nielsen marine PSEUDOPRINGSHEIMIA Wille confluens (Rosenvinge) Wille marine ULVELLA P.Crouan & H.Crouan inflata (Ercegovic) R.Nielsen, C.J.O'Kelly & B. Wysor marine lens P.Crouan & H.Crouan marine repens (Pringsheim) R.Nielsen, C.J.O'Kelly & B.Wysor marine scutata (Reinke) R.Nielsen, C.J.O'Kelly & B.Wysor marine setchellii P.J.L.Dangeard marine viridis (Reinke) R.Nielsen, C.J.O'Kelly & B.Wysor marine wittrockii (Wille) R.Nielsen, C.J.O'Kelly & B.Wysor marine ULVOPHYCEAE INCERTAE SEDIS Ulvophyceae familia incertae sedis BLASTOPHYSA Reinke rhizopus Reinke marine

51 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

CRYPTOPHYTA CRYPTOPHYCEAE PYRENOMONADALES Geminigeraceae PLAGIOSELMIS Butcher ex G.Novarino, I.A.N.Lucas & S.Morrall prolonga Butcher ex G.Novarino, I.A.N.Lucas, & S.Morrall marine

52 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

CYANOBACTERIA CYANOPHYCEAE CHROOCOCCALES Aphanothecaceae APHANOTHECE C.Nägeli microscopica Nägeli freshwater microspora (Meneghini) Rabenhorst freshwater pallida (Kützing) Rabenhorst freshwater/terrestr saxicola Nägeli freshwater/terrestrial stagnina (Sprengel)ial A.Braun freshwater GLOEOTHECE C.Nägeli confluens Nägeli terrestrial rupestris (Lyngbye) Bornet freshwater/terrestr ial Chroococcaceae CHROOCOCCUS Nägeli cohaerens (Brébisson) Nägeli terrestrial helveticus Nägeli freshwater/terrestr minor (Kützing) Nägeliial marine/freshwater minutus (Kützing) Nägeli freshwater pallidus Nägeli freshwater/terrestr rufescens (Kützing)ial Nägeli terrestrial schizodermaticus West freshwater turgidus (Kützing) Nägeli freshwater DACTYLOCOCCOPSIS Hansgirg rhaphidioides Hansgirg freshwater GLOEOCAPSOPSIS Geitler ex Komárek crepidinum (Thuret) Geitler ex Komárek freshwater/terrestr magma (Brébisson) Komárek & Anagnostidisial ex Komárek terrestrial Entophysalidaceae ENTOPHYSALIS Kützing conferta (Kützing) Drouet & Daily freshwater granulosa Kützing marine Gomphosphaeriaceae GOMPHOSPHAERIA Kützing aponina Kützing freshwater Microcystaceae GLOEOCAPSA Kützing aeruginosa Kützing freshwater alpina Nägeli terrestrial conglomerata Kützing freshwater livida (Carmichael) Kützing terrestrial paroliniana (Meneghini) Kützing terrestrial peniocystis Kützing terrestrial quaternata Kützing freshwater rupicola Kützing aerophytic sanguinea (C.Agardh) Kützing terrestrial HAEMATOCOCCUS C.Agardh lacustris (Girod-Chantrans) Rostafinski freshwater MICROCYSTIS Lemmermann aeruginosa (Kützing) Kützing marine/freshwater elongata Desikachary freshwater marginata (Meneghini) Kützing freshwater

53 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

prasina (Wittrock) Lemmermann freshwater protogenita (Biasoletto) Rabenhorst freshwater GLOEOBACTERALES Gloeobacteraceae GLOEOBACTER Rippka, J.B.Waterbury & Cohen-Bazire violaceus Rippka, J.B.Waterbury & Cohen-Bazire freshwater/terrestr NOSTOCALES ial Aphanizomenonaceae APHANIZOMENON A.Morren ex É.Bornet & C.Flahault flosaquae Ralfs ex Bornet & Flahault freshwater incurvum Morren ex Bornet & Flahault freshwater DOLICHOSPERMUM (Ralfs ex Bornet & Flahault) P.Wacklin, L.Hoffmann & J.Komárek circinale (Rabenhorst ex Bornet & Flahault) P.Wacklin, L.Hoffmann & J.Komárek freshwater flosaquae (Brébisson ex Bornet & Flahault) P.Wacklin, L.Hoffmann & J.Komárek freshwater lemmermannii (Richter) P.Wacklin, L.Hoffmann & J.Komárek freshwater NODULARIA Mertens ex Bornet & Flahault spumigena Mertens ex Bornet & Flahault marine/freshwater Fortieaceae FORTIEA De Toni crassa (G.S.West) G.De Toni freshwater Gloeotrichiaceae GLOEOTRICHIA J.Agardh ex Bornet & Flahault natans Rabenhorst ex Bornet & Flahault freshwater pisum Thuret ex Bornet & Flahault freshwater Hapalosiphonaceae FISCHERELLA (Bornet & Flahault) Gomont ambigua (Kützing ex Bornet & Flahault) Gomont terrestrial HAPALOSIPHON Nägeli ex É.Bornet & C.Flahault hibernicus West & G.S.West freshwater intricatus West & G.S.West freshwater pumilus Kirchner ex Bornet & Flahault freshwater MASTIGOCOLEUS Lagerheim ex É.Bornet & C.Flahault testarum Lagerheim ex Bornet & Flahault marine Nostocaceae ANABAENA Bory ex Bornet & Flahault orthogona West freshwater oscillarioides Bory ex Bornet & Flahault marine/freshwater torulosa Lagerheim ex Bornet & Flahault marine/freshwater CYLINDROSPERMUM Kützing ex É.Bornet & C.Flahault licheniforme Kützing ex Bornet & Flahault terrestrial stagnale Bornet & Flahault freshwater/terrestr ial DESMONOSTOC P.Hrouzek & S.Ventura muscorum (C.Agardh ex Bornet & Flahault) Hrouzek & Ventura terrestrial NOSTOC Vaucher ex Bornet & Flahault caeruleum Lyngbye ex Bornet & Flahault freshwater carneum C.Agardh ex Bornet & Flahault freshwater commune Vaucher ex Bornet & Flahault freshwater/terrestr linckia Bornet ex Bornet & Flahault freshwaterial microscopicum Carmichael ex Bornet & Flahault terrestrial paludosum Kützing ex Bornet & Flahault freshwater/terrestr pruniforme C.Agardh ex Bornet & Flahaultialmarine/freshwater punctiforme Hariot terrestrial

54 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

sphaericum Vaucher ex Bornet & Flahault freshwater/terrestr sphaeroides Kützing ex Bornet & Flahault freshwater/terrestrial verrucosum Vaucher ex Bornet & Flahault ialfreshwater TRICHORMUS (Ralfs ex É.Bornet & C.Flahault) J.Komárek & K.Anagnostidis variabilis (Kützing ex Bornet & Flahault) Komárek & Anagnostidis freshwater/terrestr ial Rhizonemataceae RHIZONEMA Lücking & Barrie interruptum Lücking & Barrie freshwater Rivulariaceae CALOTHRIX C.Agardh ex Bornet & Flahault aeruginea Thuret ex Bornet & Flahault marine confervicola C.Agardh ex Bornet & Flahault marine consociata Bornet & Flahault marine cottonii G.De Toni marine fasciculata C.Agardh ex Bornet & Flahault marine fusca Bornet & Flahault freshwater/terrestr parasitica Thuret ex Bornetial & Flahault marine parietina Thuret ex Bornet & Flahault freshwater/terrestr pulvinata C.Agardh ex Bornet & Flahaultial marine scopulorum C.Agardh ex Bornet & Flahault marine/terrestrial DICHOTHRIX G.Zanardini ex É.Bornet & C.Flahault baueriana Bornet & Flahault freshwater/terrestr gypsophila Bornet & Flahaultialmarine/freshwater interrupta West & G.S.West freshwater/terrestr orsiniana Bornet & Flahault freshwaterial ISACTIS G.Thuret ex É.Bornet & C.Flahault plana Thuret ex Bornet & Flahault marine MICROCHAETE Thuret ex Bornet & C.Flahault aeruginea Batters marine grisea Thuret ex Bornet & Flahault freshwater RIVULARIA C.Agardh ex Bornet & Flahault atra Roth ex Bornet & Flahault marine beccariana Bornet & Flahault freshwater biasolettiana Meneghini ex Bornet & Flahault freshwater bullata Berkeley ex Bornet & Flahault marine coadunata Foslie marine haematites C.Agardh ex Bornet & Flahault freshwater minutula Bornet & Flahault freshwater nitida C.Agardh ex Bornet & Flahault marine Scytonemataceae DESMONEMA Berkeley & Thwaites ex Bornet & Flahault wrangelii Bornet & Flahault freshwater PETALONEMA M.J.Berkeley ex C.Correns alatum (Borzì ex Bornet & Flahault) Correns freshwater/terrestr ial SCYTONEMA C.Agardh ex É.Bornet & C.Flahault hofmanii C.Agardh ex Bornet & Flahault terrestrial mirabile Bornet freshwater/terrestr myochrous C.Agardhial ex Bornet & Flahault freshwater/terrestr ocellatum Lyngbye ex Bornet & Flahault terrestrialial tolypothrichoides Kützing ex Bornet & Flahault freshwater/terrestr ial

55 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

SCYTONEMATOPSIS E.I.Kiseleva crustacea (Thuret ex Bornet & Flahault) Koválik & Komárek marine Stigonemataceae STIGONEMA C.Agardh ex Bornet & Flahault hormoides Bornet & Flahault terrestrial informe Kützing ex Bornet & Flahault freshwater/terrestr mamillosum C.Agardh ex Bornet & Flahaultial freshwater minutum Hassall ex Bornet & Flahault terrestrial ocellatum Thuret ex Bornet & Flahault freshwater/terrestr panniforme Bornet & Flahault freshwater/terrestrial turfaceum Cooke ex Bornet & Flahaultial terrestrial Symphyonemataceae BRACHYTRICHIA Zanardini ex Bornet & Flahault quoyi Bornet & Flahault marine Tolypothrichaceae TOLYPOTHRIX Kützing ex É.Bornet & C.Flahault arenophila West & G.S.West terrestrial distorta Kützing ex Bornet & Flahault marine/freshwater lanata Wartmann ex Bornet & Flahault freshwater tenuis Kützing ex Bornet & Flahault freshwater OSCILLATORIALES Coleofasciculaceae ANAGNOSTIDINEMA Strunecký et al. amphibium (C.Agardh ex Gomont) Strunecký, Bohunická, J.R.Johansen & J.Komárek freshwater COLEOFASCICULUS M.A.Siegesmund, J.R.Johansen & T.Friedl chthonoplastes (Thuret ex Gomont) M.Siegesmund, J.R.Johansen & T.Friedl marine GEITLERINEMA (Anagnostidis & Komárek) Anagnostidis splendidum (Greville ex Gomont) Anagnostidis freshwater/terrestr ial Cyanothecaceae CYANOTHECE Komárek aeruginosa (Nägeli) Komárek freshwater major (Schröter) Komárek freshwater Homoeotrichaceae PHORMIDIOCHAETE Komárek nordstedtii (Bornet & Flahault ex De Toni) Komárek freshwater Microcoleaceae ARTHROSPIRA Sitzenberger ex Gomont jenneri Stizenberger ex Gomont freshwater KAMPTONEMA O.Strunecký, J.Komárek & J.Smarda formosum (Bory ex Gomont) Strunecký, Komárek & J.Smarda freshwater laetevirens (H.M.Crouan & P.L.Crouan ex Gomont) Strunecký, Komárek & J.Smarda freshwater MICROCOLEUS Desmazières ex Gomont autumnalis (Gomont) Strunecky, Komárek & J.R.Johansen freshwater lyngbyaceus Kützing ex Forti marine vaginatus Gomont ex Gomont terrestrial wallrothii Strunecky, Komárek & J.R.Johansen freshwater/terrestr ial PLANKTOTHRIX K.Anagnostidis & J.Komárek agardhii (Gomont) Anagnostidis & Komárek freshwater PSEUDOPHORMIDIUM (Forti) Anagnostidis & Komárek battersii (Gomont) Anagnostidis marine SYMPLOCA Kützing ex Gomont dubia Gomont freshwater

56 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

flotowiana Kützing ex Gomont freshwater hydnoides Kützing ex Gomont marine SYMPLOCASTRUM (Gomont) Kirchner friesii (Gomont) Kirchner terrestrial muelleri (Nägeli ex Gomont) Anagnostidis freshwater/terrestr ial Oscillatoriaceae LYNGBYA C.Agardh ex Gomont aestuarii Liebman ex Gomont ubiquitous confervoides C.Agardh ex Gomont marine lutea Gomont ex Gomont freshwater luteola P.Crouan & H.Crouan ex Gomont majuscula Harvey ex Gomont marine/freshwater martensiana Meneghini ex Gomont ubiquitous meneghiniana Gomont marine semiplena J.Agardh ex Gomont marine/freshwater OSCILLATORIA Vaucher ex Gomont aerugescens Drummond ex Gomont freshwater corallinae Gomont ex Gomont marine froelichii Komárek & Anagnostidis freshwater limosa C.Agardh ex Gomont freshwater margaritifera Kützing ex Gomont marine percursa Gomont freshwater princeps Vaucher ex Gomont ubiquitous sancta Kützing ex Gomont freshwater simplicissima Gomont freshwater tenuis C.Agardh ex Gomont freshwater PHORMIDIUM Kützing ex Gomont boryanum (Bory ex Gomont) Anagnostidis & Komárek freshwater breve (Kützing ex Gomont) Anagnostidis & Komárek freshwater chalybeum (Mertens ex Gomont) Anagnostidis & Komárek marine/freshwater corium Gomont ex Gomont ubiquitous inundatum Kützing ex Gomont freshwater irriguum (Kützing ex Gomont) Anagnostidis & Komárek freshwater leptodermum Kützing ex Forti nigroviride (Thwaites ex Gomont) Anagnostidis & Komárek marine/terrestrial nigrum (Vaucher ex Gomont) Anagnostidis & Komárek freshwater papyraceum Gomont ex Gomont freshwater/terrestr subfuscum Kützing ex Gomont freshwaterial thwaitesii I.Umezaki & M.Watanabe marine uncinatum Gomont ex Gomont freshwater PLECTONEMA Thuret ex Gomont volkensii Schmidle freshwater/terrestr ial Phormidiaceae POTAMOLINEA M.D.Martins & L.H.Z.Branco aerugineocaerulea (Gomont) M.D.Martins & L.H.Z.Branco freshwater PLEUROCAPSALES Dermocarpellaceae CYANOCYSTIS A.Borzì violacea (P.Crouan & H.Crouan) Komárek & Anagnostidis marine DERMOCARPELLA E.Lemmermann prasina (Reinsch) Komárek & Anagnostidis marine

57 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

STANIERIA J.Komárek & K.Anagnostidis sphaerica (Setchell & N.L.Gardner) Anagnostidis & Pantazidou marine Hyellaceae HYELLA É.Bornet & C.Flahault caespitosa Bornet & Flahault marine PLEUROCAPSA Thuret fuliginosa Hauck marine/terrestrial Xenococcaceae XENOCOCCUS Thuret schousboei Thuret marine/freshwater SPIRULINALES Spirulinaceae SPIRULINA Turpin ex Gomont major Kützing ex Gomont marine/freshwater subsalsa Oersted ex Gomont marine/freshwater tenuissima Kützing marine SYNECHOCOCCALES Chamaesiphonaceae CHAMAESIPHON A.Braun confervicola A.Braun freshwater Coelosphaeriaceae COELOSPHAERIUM Nägeli kuetzingianum Nägeli freshwater minutissimum Lemmermann freshwater natans Lemmermann freshwater SNOWELLA A.A.Elenkin lacustris (Chodat) Komárek & Hindák freshwater WORONICHINIA A.A.Elenkin naegeliana (Unger) Elenkin freshwater Leptolyngbyaceae LEIBLEINIA (M.Gomont) L.Hoffman subtilis (Holden) Anagnostidis & Komárek marine LEPTOLYNGBYA Anagnostidis & Komárek fragilis (Gomont) Anagnostidis & Komárek marine/terrestrial gloeophila (Borzì) Anagnostidis & Komárek freshwater norvegica (Gomont) Anagnostidis & Komárek marine nostocorum (Bornet ex Gomont) Anagnostidis & Komárek freshwater/terrestr ochracea (Thuret ex Gomont) Anagnostidis & Komárek freshwaterial subuliformis (Gomont) Anagnostidis freshwater tenuis (Gomont) Anagnostidis & Komárek marine/freshwater terebrans (Bornet & Flahault ex Gomont) Anagnostidis & Komárek marine PLANKTOLYNGBYA Anagnostidis & Komárek limnetica (Lemmermann) Komárková-Legnerová & Cronberg freshwater Merismopediaceae APHANOCAPSA C.Nägeli grevillei (Berkeley) Rabenhorst freshwater hyalina (Lyngbye) Hansgirg freshwater incerta (Lemmermann) G.Cronberg & Komárek freshwater marina Hansgirg marine/freshwater parietina (Nägeli ex Kützing) Nägeli terrestrial stagnalis (Lemmermann) R.N.Beljakova freshwater

58 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

LIMNOCOCCUS (Komárek & Anagnostidis) Komárková, Jezberová, O.Komárek & Zapomelová limneticus (Lemmermann) Komárková, Jezberová, O.Komárek & Zapomelová freshwater MERISMOPEDIA Meyen convoluta Brébisson ex Kützing freshwater elegans A.Braun ex Kützing ubiquitous glauca (Ehrenberg) Kützing marine/freshwater hyalina (Ehrenberg) Kützing freshwater tenuissima Lemmermann marine/freshwater violacea Kützing freshwater MICROCROCIS P.G.Richter irregularis (Lagerheim) Geitler freshwater Pseudanabaenaceae PSEUDANABAENA Lauterborn persicina (Reinke ex Gomont) Anagnostidis marine/freshwater Synechococcaceae ANATHECE (Komárek & Anagnostidis) Komárek, Kastovsky & Jezberová clathrata (West & G.S.West) Komárek, Kastovsky & Jezberová freshwater SYNECHOCOCCUS C.Nägeli elongatus (Nägeli) Nägeli freshwater/terrestr ial Synechococcales familia incertae sedis DASYGLOEA Thwaites ex Gomont amorpha Berkeley ex Gomont freshwater HETEROLEIBLEINIA (Geitler) Hoffmann kuetzingii (Schmidle) Compère marine/freshwater JAAGINEMA Anagnostidis & Komárek subtilissimum (Kützing ex Forti) Anagnostidis & Komárek ubiquitous SCHIZOTHRIX Kützing ex Gomont arenaria Gomont marine/freshwater calcicola Gomont marine delicatissima West & G.S.West freshwater/terrestr funalis West & G.S.West freshwater/terrestrial vaginata Gomont freshwaterial Trichocoleusaceae TRICHOCOLEUS Anagnostidis delicatulus (West & G.S.West) Anagnostidis freshwater tenerrimus (Gomont) Anagnostidis marine thermalis (V.Vouk) Anagnostidis freshwater

59 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

GLAUCOPHYTA GLAUCOPHYCEAE GLAUCOCYSTALES Glaucocystaceae GLAUCOCYSTIS Itzigsohn nostochinearum Itzigsohn freshwater

60 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

MIOZOA DINOPHYCEAE DINOPHYSIALES Dinophysaceae DINOPHYSIS Ehrenberg acuminata Claparède & Lachmann marine GLOEODINIALES Gloeodiniaceae RUFUSIELLA A.R.Loeblich III insignis (Hassall) Loeblich III freshwater/terrestr GONYAULACALES ial Ceratiaceae CERATIUM F.Schrank cornutum (Ehrenberg) Claparède & J.Lachmann freshwater hirundinella (O.F.Müller) Dujardin marine/freshwater TRIPOS Bory arietinus (Cleve) F.Gómez marine azoricus (Cleve) F.Gómez marine candelabrum (Ehrenberg) F.Gómez marine compressus (Gran) F.Gómez marine concilians (Jørgenen) F.Gómez marine contortus (Gourret) F.Gómez marine extensus (Gourret) F.Gómez marine furca (Ehrenberg) F.Gómez marine fusus (Ehrenberg) F.Gómez marine gibberus (Gourret) F.Gómez marine gravidus (Gourret) F.Gómez marine hexacanthus (Gourret) F.Gómez marine inflatus (Kofoid) F.Gómez marine lineatus (Ehrenberg) F.Gómez marine longipes (Bailey) F.Gómez marine longissimus (Schröder) F.Gómez marine massiliensis (Gourret) F.Gómez marine minutus (Jörgensen) F.Gómez muelleri Bory marine pentagonus (Gourret) F.Gómez marine petersii (Steemann Nielsen) F.Gómez marine platycornis (Daday) F.Gómez marine setaceus (Jørgesen) F.Gómez marine symmetricus (Pavillard) F.Gómez marine trichoceros (Ehrenberg) Gómez marine Gonyaulacaceae GONYAULAX Diesing membranacea (M.R.Rossignol) Ellegaard, Daugbjerg, Rochon, J.Lewis & Harding marine spinifera (Claparède & Lachmann) Diesing marine/freshwater LINGULODINIUM D.Wall polyedra (F.Stein) J.D.Dodge marine Ostreopsidaceae ALEXANDRIUM Halim andersonii Balech marine minutum Halim marine ostenfeldii (Paulsen) Balech & Tangen marine

61 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

tamarense (Lebour) Balech marine GYMNODINIALES Gymnodiniaceae GYMNODINIUM F.Stein aureolum (E.M.Hulburt) Gert Hansen marine paradoxum A.J.Schilling freshwater Gyrodiniaceae GYRODINIUM Kofoid & Swezy helveticum (Penard) Y.Takano & T.Horiguchi freshwater Kareniaceae KARENIA Gert Hansen & Moestrup mikimotoi (Miyake & Kominami ex Oda) Gert Hansen & Moestrup marine PERIDINIALES Kryptoperidiniaceae KRYPTOPERIDINIUM Lindemann foliaceum (F.Stein) Lindemann marine Peridiniaceae PERIDINIUM Ehrenberg bipes F.Stein freshwater cinctum (O.F.Müller) Ehrenberg freshwater limbatum (Stokes) Lemmermann freshwater willei Huitfeldt-Kaas freshwater willei Huitfeldt-Kaas freshwater Peridiniales incertae sedis GLENODINIUM Ehrenberg pulvisculus (Ehrenberg) F.Stein freshwater Protoperidiniaceae PROTOPERIDINIUM Bergh americanum (Gran & Braarud) Balech marine crassipes (Kofoid) Balech marine depressum (Bailey) Balech marine divergens (Ehrenberg) Balech marine oblongum (Aurivillius) Parke & Dodge marine pellucidum Bergh marine steinii (Jørgensen) Balech marine PROROCENTRALES Prorocentraceae PROROCENTRUM Ehrenberg micans Ehrenberg marine

62 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

OCHROPHYTA CHRYSOPHYCEAE CHROMULINALES Chrysocapsaceae CHRYSOCAPSA Pascher planctonica (West & G.S.West) F.E.Fritsch freshwater Dinobryaceae DINOBRYON Ehrenberg bavaricum Imhof freshwater cylindricum O.E.Imhof freshwater protuberans Lemmermann freshwater sertularia Ehrenberg freshwater sociale (Ehrenberg) Ehrenberg freshwater PARAPHYSOMONADALES Paraphysomonadaceae CHRYSOSPHAERELLA Lauterborn longispina Lauterborn freshwater PARAPHYSOMONAS De Saedeleer imperforata I.A.N.Lucas brackish vestita (A.C.Stokes) De Saedeleer marine/freshwater EUSTIGMATOPHYCEAE EUSTIGMATALES Eustigmataceae CHLOROBOTRYS Bohlin regularis (West) Bohlin freshwater GONIOCHLORIDALES Goniochloridaceae PSEUDOSTAURASTRUM Chodat enorme (Ralfs) Chodat freshwater TETRAËDRIELLA Pascher regularis (Kützing) Fott freshwater PHAEOPHYCEAE CHORDALES Chordaceae CHORDA Stackhouse filum (Linnaeus) Stackhouse marine DESMARESTIALES Arthrocladiaceae ARTHROCLADIA Duby villosa (Hudson) Duby marine Desmarestiaceae DESMARESTIA J.V.Lamouroux aculeata (Linnaeus) J.V.Lamouroux marine dudresnayi J.V.Lamouroux ex Léman marine ligulata (Stackhouse) J.V.Lamouroux marine viridis (O.F.Müller) J.V.Lamouroux marine DICTYOTALES Dictyotaceae DICTYOPTERIS J.V.Lamouroux polypodioides (A.P.De Candolle) J.V.Lamouroux marine DICTYOTA J.V.Lamouroux dichotoma (Hudson) J.V.Lamouroux marine spiralis Montagne marine

63 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

PADINA Adanson pavonica (Linnaeus) Thivy marine TAONIA J.Agardh atomaria (Woodward) J.Agardh marine ECTOCARPALES Acinetosporaceae ACINETOSPORA Bornet crinita (Carmichael) Sauvageau marine FELDMANNIA Hamel globifera (Kützing) Hamel marine irregularis (Kützing) Hamel marine lebelii (Areschoug ex P.Crouan & H.Crouan) Hamel marine mitchelliae (Harvey) H.-S.Kim marine mitchelliae (Harvey) H.-S.Kim marine paradoxa (Montagne) Hamel marine simplex (P.Crouan & H.Crouan) Hamel marine HERPONEMA J.Agardh solitarium (Sauvageau) Hamel marine velutinum (Greville) J.Agardh marine HINCKSIA J.E.Gray granulosa (Smith) P.C.Silva marine hincksiae (Harvey) P.C.Silva marine ovata (Kjellman) P.C.Silva marine sandriana (Zanardini) P.C.Silva marine secunda (Kützing) P.C.Silva marine POGOTRICHUM Reinke filiforme Reinke marine PYLAIELLA Bory littoralis (Linnaeus) Kjellman marine Chordariaceae ACROTHRIX Kylin gracilis Kylin marine ASPEROCOCCUS J.V.Lamouroux bullosus J.V.Lamouroux marine ensiformis (Delle Chiaje) M.J.Wynne marine fistulosus (Hudson) W.J.Hooker marine BOTRYTELLA Bory micromora Bory marine CHILIONEMA Sauvageau hispanicum (Sauvageau) R.L.Fletcher marine ocellatum (Kützing) Kornmann marine CHORDARIA C.Agardh flagelliformis (O.F.Müller) C.Agardh marine CLADOSIPHON Kützing contortus (Thuret) Kylin marine zosterae (J.Agardh) Kylin marine COMPSONEMA Kuckuck microspongium (Batters) Kuckuck marine CORYNOPHLAEA Kützing crispa (Harvey) Kuckuck marine

64 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

CYLINDROCARPUS P.Crouan & H.Crouan microscopicus P.Crouan & H.Crouan marine DICTYOSIPHON Greville chordaria Areschoug marine foeniculaceus (Hudson) Greville marine ELACHISTA Duby flaccida (Dillwyn) Fries marine fucicola (Velley) Areschoug marine scutulata (Smith) Areschoug marine stellaris Areschoug marine EUDESME J.Agardh virescens (Carmichael ex Berkeley) J.Agardh marine GIRAUDYA Derbès & Solier sphacelarioides Derbès & Solier marine ISTHMOPLEA Kjellman sphaerophora (Carmichael) Gobi marine KUETZINGIELLA Kornmann battersii (Bornet ex Sauvageau) Kornmann marine holmesii (Batters) G.Russell marine LAMINARIOCOLAX Kylin aecidioides (Rosenvinge) A.F.Peters marine tomentosoides (Farlow) Kylin marine LEATHESIA S.F.Gray marina (Lyngbye) Decaisne marine LEBLONDIELLA Hamel densa (Batters) Hamel marine LEPTONEMATELLA P.C.Silva fasciculata (Reinke) P.C.Silva marine LITOSIPHON Harvey laminariae (Lyngbye) Harvey marine MESOGLOIA C.Agardh lanosa P.Crouan & H.Crouan marine vermiculata (Smith) S.F.Gray marine MICROCORYNE Strömfelt ocellata Strömfelt marine MICROSPONGIUM Reinke globosum Reinke marine stilophorae (P.Crouan & H.Crouan) Cormaci & G.Furnari marine MIKROSYPHAR Kuckuck polysiphoniae Kuckuck marine porphyrae Kuckuck marine MYRIACTULA Kuntze areschougii (P.Crouan & H.Crouan) Hamel marine clandestina (P.Crouan & H.Crouan) Feldmann marine haydenii (Gatty) Levring marine pulvinata (Kützing) Kuntze marine rivulariae (Suhr ex Areschoug) Feldmann marine stellulata (Harvey) Levring marine MYRIOCLADIA J.Agardh lovenii J.Agardh marine

65 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

MYRIONEMA Greville corunnae Sauvageau marine foecundum (Strömfelt) Sauvageau marine magnusii (Sauvageau) Loiseaux marine orbiculare J.Agardh marine papillosum Sauvageau marine strangulans Greville marine MYRIOTRICHIA Harvey clavaeformis Harvey marine repens Hauck marine PHAEOSTROMA Kuckuck pustulosum Kuckuck marine PILINIA Kützing rimosa Kützing marine PILOCLADUS Kornmann volubilis (P.Crouan & H.Crouan) Kornmann marine PROTECTOCARPUS Kornmann speciosus (Børgesen) Kornmann marine PUNCTARIA Greville crispata (Kützing) Trevisan marine latifolia Greville marine plantaginea (Roth) Greville marine tenuissima (C.Agardh) Greville marine SAUVAGEAUGLOIA Hamel ex Kylin divaricata (Clemente) Cremades marine SPERMATOCHNUS Kützing paradoxus (Roth) Kützing marine SPHAEROTRICHIA Kylin divaricata (C.Agardh) Kylin marine STICTYOSIPHON Kützing adriaticus Kützing marine griffithsianus (Le Jolis) Holmes & Batters marine soriferus (Reinke) Rosenvinge marine subarticulatus (Areschoug) Hauck marine tortilis (Gobi) Reinke marine STILOPHORA J.Agardh nodulosa (C.Agardh) P.C.Silva marine tenella (Esper) P.C.Silva marine STILOPSIS Kuckuck lejolisii (Thuret) Kuckuck & Nienburg ex Hamel marine STREBLONEMA Derbès & Solier breve (Sauvageau) De Toni marine fasciculatum Thuret marine parasiticum (Sauvageau) De Toni marine zanardinii (P.Crouan & H.Crouan) De Toni marine STRIARIA Greville attenuata (Greville) Greville marine ULONEMA Foslie rhizophorum Foslie marine Ectocarpaceae

66 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

ECTOCARPUS Lyngbye crouaniorum Thuret marine fasciculatus Harvey marine penicillatus (C.Agardh) Kjellman marine siliculosus (Dillwyn) Lyngbye marine SPONGONEMA Kützing tomentosum (Hudson) Kützing marine Petrospongiaceae PETROSPONGIUM Nägeli ex Kützing berkeleyi (Greville) Nägeli ex Kützing marine Scytosiphonaceae COLPOMENIA (Endlicher) Derbès & Solier peregrina Sauvageau marine PETALONIA Derbès & Solier fascia (O.F.Müller) Kuntze marine PLANOSIPHON McDevit & G.W.Saunders filiformis (Batters) Santiañez & Kogame marine zosterifolius (Reinke) McDevit & G.W.Saunders marine SCYTOSIPHON C.Agardh dotyi M.J.Wynne marine lomentaria (Lyngbye) Link marine SYMPHYOCARPUS Rosenvinge strangulans Rosenvinge marine FUCALES Fucaceae ASCOPHYLLUM Stackhouse nodosum (Linnaeus) Le Jolis marine FUCUS Linnaeus ceranoides Linnaeus marine cottonii M.J.Wynne & Magne marine distichus Linnaeus marine serratus Linnaeus marine spiralis Linnaeus marine vesiculosus Linnaeus marine PELVETIA Decaisne & Thuret canaliculata (Linnaeus) Decaisne & Thuret marine Himanthaliaceae HIMANTHALIA Lyngbye elongata (Linnaeus) S.F.Gray marine Sargassaceae BIFURCARIA Stackhouse bifurcata R.Ross marine CARPODESMIA Greville temariscifolia (Hudson) Orellana & Sansón marine CYSTOSEIRA C.Agardh baccata (S.G.Gmelin) P.C.Silva marine foeniculacea (Linnaeus) Greville marine HALIDRYS Lyngbye siliquosa (Linnaeus) Lyngbye marine HORMOPHYSA Kützing cuneiformis (J.F.Gmelin) P.C.Silva marine

67 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

SARGASSUM C.Agardh muticum (Yendo) Fensholt marine TREPTACANTHA Kützing baccata (S.G.Gmelin) Orellana & Sansón marine nodicaulis (Withering) Orellana & Sansón marine usneoides (Linnaeus) Orellana & Sansón marine ISHIGEALES Petrodermataceae PETRODERMA Kuckuck maculiforme (Wollny) Kuckuck marine LAMINARIALES Alariaceae ALARIA Greville esculenta (Linnaeus) Greville marine UNDARIA Suringar pinnatifida (Harvey) Suringar marine Laminariaceae LAMINARIA J.V.Lamouroux digitata (Hudson) J.V.Lamouroux marine hyperborea (Gunnerus) Foslie marine SACCHARINA Stackhouse latissima (Linnaeus) C.E.Lane, C.Mayes, Druehl & G.W.Saunders marine longicruris (Bachelot de la Pylaie) Kuntze marine PHAEOPHYCEAE ORDO INCERTAE SEDIS Phaeophyceae familia incertae sedis SORAPION Kuckuck simulans Kuckuck marine RALFSIALES Ralfsiaceae RALFSIA Berkeley verrucosa (Areschoug) Areschoug marine SPHACELARIALES Cladostephaceae CLADOSTEPHUS C.Agardh spongiosum (Hudson) C.Agardh marine Lithodermataceae PSEUDOLITHODERMA Svedelius extensum (P.Crouan & H.Crouan) S.Lund marine roscoffense Loiseaux marine Sphacelariaceae BATTERSIA Reinke ex Batters mirabilis Reinke ex Batters marine plumigera (Holmes ex Hauck) Draisma, Prud'homme & H. Kawai marine CHAETOPTERIS Kützing plumosa (Lyngbye) Kützing marine SPHACELARIA Lyngbye cirrosa (Roth) C.Agardh marine fusca (Hudson) S.F.Gray marine plumula Zanardini marine rigidula Kützing marine SPHACELORBUS Draisma, Prud'homme & H.Kawai nanus (Nageli ex Kützing) Draisma, Prud'homme & H.Kawai marine

68 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

Sphacelodermaceae SPHACELODERMA Kuckuck caespitulum (Lyngbye) Draisma, Prud'homme & H.Kawai marine Stypocaulaceae HALOPTERIS Kützing filicina (Grateloup) Kützing marine scoparia (Linnaeus) Sauvageau marine PROTOHALOPTERIS Draisma, Prud'homme & H.Kawai radicans (Dillwyn) Draisma, Prud'homme & H.Kawai marine SPOROCHNALES Sporochnaceae CARPOMITRA Kützing costata (Stackhouse) Batters marine SPOROCHNUS C.Agardh pedunculatus (Hudson) C.Agardh marine STSCHAPOVIALES Halosiphonaceae HALOSIPHON Jaasund tomentosus (Lyngbye) Jaasund marine TILOPTERIDALES Cutleriaceae CUTLERIA Greville multifida (Turner) Greville marine ZANARDINIA Nardo ex Zanardini typus (Nardo) P.C.Silva marine Phyllariaceae SACCORHIZA Bachelot de la Pylaie polyschides (Lightfoot) Batters marine Tilopteridaceae HAPLOSPORA Kjellman globosa Kjellman marine TILOPTERIS Kützing mertensii (Turner) Kützing marine PHAEOTHAMNIOPHYCEAE PHAEOTHAMNIALES Phaeothamniaceae STICHOGLOEA Chodat doederleinii (Schmidle) Wille freshwater RAPHIDOPHYCEAE CHATTONELLALES Chattonellaceae HETEROSIGMA Y.Hada ex Y.Hara & M.Chihara akashiwo (Y.Hada) Y.Hada ex Y.Hara & M.Chihara marine SYNUROPHYCEAE SYNURALES Mallomonadaceae MALLOMONAS Perty akrokomos Ruttner freshwater costata Dürrschmidt freshwater crassisquama (Asmund) Fott freshwater hamata Asmund freshwater leboimei Bourrelly freshwater ploesslii Perty freshwater

69 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

punctifera Korshikov freshwater transsylvanica L.S.Péterfi & Momeu freshwater Synuraceae SPINIFEROMONAS E.Takahashi coronacircumspina (Wujek & Kristiansen) K.H.Nicholls freshwater trioralis E.Takahashi freshwater SYNURA Ehrenberg conopea Kynclová & Skaloud freshwater hibernica Skaloud & Skaloudová freshwater mamillosa E.Takahashi freshwater petersenii Korshikov freshwater sphagnicola (Korshikov) Korshikov freshwater spinosa Korshikov freshwater uvella Ehrenberg freshwater XANTHOPHYCEAE BOTRYDIALES Botrydiaceae BOTRYDIUM Wallroth granulatum (Linnaeus) Greville terrestrial MISCHOCOCCALES Characiopsidaceae CHARACIOPSIS Borzì acuta (A.Braun) Borzì freshwater longipes (Braun) Borzì freshwater subulata (A.Braun) Borzì freshwater Mischococcaceae MISCHOCOCCUS Nägeli confervicola Nägeli freshwater Ophiocytiaceae OPHIOCYTIUM Nägeli arbuscula (A.Braun ex Kützing) Sande Lacoste & Suringar freshwater bicuspidatum (Borge) Lemmermann freshwater cochleare (Eichwald) A.Braun freshwater majus Nägeli freshwater parvulum (Perty) A.Braun freshwater Pleurochloridaceae ISTHMOCHLORON Skuja lobulatum (Nägeli) Skuja freshwater trispinatum (West & G.S.West) Skuja freshwater TRIBONEMATALES Tribonemataceae TRIBONEMA Derbès & Solier bombycinum (C.Agardh) Derbès & Solier freshwater pachydermum C.-C.Jao freshwater raciborskii (Gutwinski) Heering freshwater VAUCHERIALES Vaucheriaceae VAUCHERIA A.P.de Candolle arcassonensis P.J.L.Dangeard terrestrial aversa Hassall terrestrial bursata (O.F.Müller) C.Agardh terrestrial canalicularis (Linnaeus) T.A.Christensen freshwater

70 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019 compacta (Collins) Collins ex W.R.Taylor freshwater/terrestr coronata Nordstedt terrestrial ial cruciata (Vaucher) De Candolle freshwater/terrestr dichotoma (Linnaeus) C.Martius ialmarine/terrestrial dillwynii (F.Weber & D.Mohr) C.Agardh terrestrial fontinalis (Linnaeus) T.A.Christensen terrestrial frigida (Roth) C.Agardh freshwater/terrestr geminata (Vaucher) De Candolleial freshwater/terrestr intermedia Nordstedt terrestrial ial litorea C.Agardh freshwater/terrestr medusa T.A.Christensenial terrestrial minuta Blum & Conover terrestrial piloboloides Thuret marine sescuplicaria T.A.Christensen marine/terrestrial sessilis (Vaucher) De Candolle terrestrial subsimplex P.Crouan & H.Crouan terrestrial synandra Woronin marine/terrestrial terrestris (Vaucher) De Candolle terrestrial velutina C.Agardh terrestrial

71 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

RHODOPHYTA BANGIOPHYCEAE BANGIALES Bangiaceae BANGIA Lyngbye atropurpurea (Mertens ex Roth) C.Agardh freshwater fuscopurpurea (Dillwyn) Lyngbye marine PORPHYRA C.Agardh dioica J.Brodie & L.M.Irvine marine linearis Greville marine purpurea (Roth) C.Agardh marine umbilicalis Kützing marine PYROPIA J.Agardh leucosticta (Thuret) Neefus & J.Brodie marine WILDEMANIA De Toni amplissima (Kjellman) Foslie marine miniata (C.Agardh) Foslie marine COMPSOPOGONOPHYCEAE ERYTHROPELTALES Erythrotrichiaceae ERYTHROCLADIA Rosenvinge irregularis Rosenvinge marine ERYTHROTRICHIA Areschoug bertholdii Batters marine carnea (Dillwyn) J.Agardh marine investiens (Zanardini) Bornet marine welwitschii (Ruprecht) Batters marine PORPHYROPSIS Rosenvinge coccinea (J.Agardh ex Areschoug) Rosenvinge marine PORPHYROSTROMIUM Trevisan [de Saint-Léon] boryanum (Montagne) P.C.Silva marine ciliare (Carmichael) M.J.Wynne marine SAHLINGIA Kornmann subintegra (Rosenvinge) Kornmann marine FLORIDEOPHYCEAE ACROCHAETIALES Acrochaetiaceae ACROCHAETIUM Nägeli alariae (Jónsson) Bornet marine endozoicum (Darbishire) Batters marine microscopicum (Nägeli ex Kützing) Nägeli marine parvulum (Kylin) Hoyt marine secundatum (Lyngbye) Nägeli marine seiriolanum (Harvey-Gibson) Hamel marine sparsum (Harvey) Nägeli marine AUDOUINELLA Bory chalybea (Roth) Bory freshwater hermannii (Roth) Duby freshwater GRANIA (Rosenvinge) Kylin efflorescens (J.Agardh) Kylin marine KYLINIA Rosenvinge endophytica (Batters) Athanasiadis marine

72 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

rosulata Rosenvinge marine RHODOCHORTON Nägeli purpureum (Lightfoot) Rosenvinge marine AHNFELTIALES Ahnfeltiaceae AHNFELTIA E.M.Fries plicata (Hudson) Fries marine ATRACTOPHORALES Atractophoraceae ATRACTOPHORA P.Crouan & H.Crouan hypnoides P.Crouan & H.Crouan marine BALBIANIALES Balbianiaceae BALBIANIA Sirdot investiens (Lenormand ex Kützing) Sirodot freshwater BATRACHOSPERMALES Batrachospermaceae BATRACHOSPERMUM Roth turfosum Bory freshwater SHEATHIA Salomaki & M.L.Vis arcuata (Kylin) Salomaki & M.L.Vis freshwater TORULARIA Bonnemaison atra (Hudson) M.J.Wynne freshwater Lemaneaceae LEMANEA Bory fluviatilis (Linnaeus) C.Agardh freshwater mamillosa Kützing freshwater PARALEMANEA (P.C.Silva) Vis & Sheath torulosa (Roth) Sheath & A.R.Sherwood freshwater BONNEMAISONIALES Bonnemaisoniaceae ASPARAGOPSIS Montagne armata Harvey marine BONNEMAISONIA C.Agardh asparagoides (Woodward) C.Agardh marine hamifera Hariot marine Naccariaceae ARDISSONEA J.Agardh crystallina (C.Agardh) Grunow brackish NACCARIA Endlicher wiggii (Turner) Endlicher ex J.Agardh marine CERAMIALES Callithamniaceae AGLAOTHAMNION Feldmann-Mazoyer bipinnatum (P.Crouan & H.Crouan) Feldmann & G.Feldmann marine diaphanum L'Hardy-Halos & Maggs marine priceanum Maggs, Guiry & Rueness marine tenuissimum (Bonnemaison) Feldmann-Mazoyer marine tenuissimum (Bonnemaison) Feldmann-Mazoyer marine tripinnatum (C.Agardh) Feldmann-Mazoyer marine tripinnatum (C.Agardh) Feldmann-Mazoyer marine

73 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

CALLITHAMNION Lyngbye corymbosum (Smith) Lyngbye marine granulatum (Ducluzeau) C.Agardh marine tetragonum (Withering) S.F.Gray marine tetricum (Dillwyn) S.F.Gray marine CROUANIA J.Agardh attenuata (C.Agardh) J.Agardh marine GAILLONA Bonnemaison gallica (Nägeli) Athanasiadis marine hookeri (Dillwyn) Athanasiadis marine rosea (Roth) Athanasiadis marine seposita (Gunnerus) Athanasiadis marine SEIROSPORA Harvey interrupta (Smith) F.Schmitz marine SPYRIDIA Harvey filamentosa (Wulfen) Harvey marine griffithsiana (J.E.Smith) G.C.Zuccarello, Prud'homme & H.Stegenga marine Ceramiaceae ANTITHAMNION Nägeli cruciatum (C.Agardh) Nägeli marine densum (Suhr) M.Howe marine villosum (Kützing) Athanasiadis marine ANTITHAMNIONELLA Lyle floccosa (O.F.Müller) Whittick marine spirographidis (Schiffner) E.M.Wollaston marine ternifolia (Hooker fil. & Harvey) Lyle marine CERAMIUM Roth arborescens J.Agardh marine atlanticum H.E.Petersen marine boergesenii H.E.Petersen marine botryocarpum A.W.Griffiths ex Harvey marine ciliatum (J.Ellis) Ducluzeau marine cimbricum H.E.Petersen marine circinatum (Kützing) J.Agardh marine derbesii Solier ex Kützing marine deslongchampsii Chauvin ex Duby marine diaphanum (Lightfoot) Roth marine echionotum J.Agardh marine gaditanum (Clemente) Cremades marine pallidum (Kützing) Maggs & Hommersand marine secundatum Lyngbye marine secundatum Lyngbye marine shuttleworthianum (Kützing) Rabenhorst marine siliquosum (Kützing) Maggs & Hommersand marine virgatum Roth marine GAYLIELLA T.O.Cho, L.McIvor & S.M.Boo flaccida (Harvey ex Kützing) T.O.Cho & L.J.McIvor marine MICROCLADIA Greville glandulosa (Solander ex Turner) Greville marine PTEROTHAMNION Nägeli crispum (Ducluzeau) Nägeli marine

74 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

plumula (J.Ellis) Nägeli marine polyacanthum (Kützing) Nägeli marine SCAGELIA E.M.Wollaston pylaisaei (Montagne) M.J.Wynne marine SCAGELOTHAMNION Athanasiadis turneri (Mertens ex Roth) Athanasiadis freshwater Delesseriaceae ACROSORIUM Zanardini ex Kützing ciliolatum (Harvey) Kylin marine APOGLOSSOCOLAX Maggs & Hommersand pusillus Maggs & Hommersand marine APOGLOSSUM (J.Agardh) J.Agardh ruscifolium (Turner) J.Agardh marine ASTEROCOLAX Feldmann & G.Feldmann erythroglossi Feldmann & G.Feldmann marine CRYPTOPLEURA Kützing ramosa (Hudson) L.Newton marine DASYA C.Agardh corymbifera J.Agardh marine hutchinsiae Harvey marine ocellata (Grateloup) Harvey marine DASYSIPHONIA I.K.Lee & J.A.West japonica (Yendo) H.-S.Kim marine japonica (Yendo) H.-S.Kim marine DELESSERIA J.V.Lamouroux sanguinea (Hudson) J.V.Lamouroux marine DRACHIELLA J.Ernst & Feldmann heterocarpa (Chauvin ex Duby) Maggs & Hommersand marine spectabilis J.Ernst & Feldmann marine ERYTHROGLOSSUM J.Agardh laciniatum (Lightfoot) Maggs & Hommersand marine GONIMOPHYLLUM Batters buffhamii Batters marine HARALDIOPHYLLUM A.D.Zinova bonnemaisonii (Kylin) A.D.Zinova marine HETEROSIPHONIA Montagne plumosa (J.Ellis) Batters marine HYPOGLOSSUM Kützing hypoglossoides (Stackhouse) Collins & Hervey marine MEMBRANOPTERA Stackhouse alata (Hudson) Stackhouse marine carpophylla (Kützing) Athanasiadis marine MYRIOGRAMME Kylin minuta Kylin marine NITOPHYLLUM Greville punctatum (Stackhouse) Greville marine PHYCODRYS Kützing rubens (Linnaeus) Batters marine POLYNEURA (J.Agardh) Kylin bonnemaisonii (C.Agardh) Maggs & Hommersand marine litterata (J.Agardh) Kylin marine

75 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

RADICILINGUA Papenfuss thysanorhizans (Holmes) Papenfuss marine Rhodomelaceae BOSTRYCHIA Montagne scorpioides (Hudson) Montagne marine CARRADORIELLA P.C.Silva denudata (Dillwyn) A.M.Savoie & G.W.Saunders marine elongata (Hudson) A.M.Savoie & G.W.Saunders marine elongella (Harvey) A.M.Savoie & G.W.Saunders marine CHONDRIA C.Agardh capillaris (Hudson) M.J.Wynne marine dasyphylla (Woodward) C.Agardh marine CHOREOCOLAX Reinsch polysiphoniae Reinsch marine HALOPITHYS Kützing incurva (Hudson) Batters marine HARVEYELLA F.Schmitz & Reinke mirabilis (Reinsch) F.Schmitz & Reinke marine LAURENCIA J.V.Lamouroux brongniartii J.Agardh marine obtusa (Hudson) J.V.Lamouroux marine pyramidalis Bory ex Kützing marine LEPTOSIPHONIA Kylin brodiei (Dillwyn) A.M.Savoie & G.W.Saunders marine fibrata (C.Agardh) A.M.Savoie & G.W.Saunders marine fibrillosa (Agardh) A.M.Savoie & G.W.Saunders marine LOPHOSIPHONIA Falkenberg obscura (C.Agardh) Falkenberg marine MELANOTHAMNUS Bornet & Falkenberg harveyi (Bailey) Díaz-Tapia & Maggs marine ODONTHALIA Lyngbye dentata (Linnaeus) Lyngbye marine OSMUNDEA Stackhouse hybrida (A.P.de Candolle) K.W.Nam marine oederi (Gunnerus) G.Furnari marine osmunda (S.G.Gmelin) K.W.Nam & Maggs marine pinnatifida (Hudson) Stackhouse marine truncata (Kützing) K.W.Nam & Maggs marine POLYSIPHONIA Greville atlantica Kapraun & J.N.Norris marine stricta (Mertens ex Dillwyn) Greville marine subtilissima Montagne marine/freshwater PTEROSIPHONIA Falkenberg complanata (Clemente) Falkenberg marine RHODOMELA C.Agardh confervoides (Hudson) P.C.Silva marine lycopodioides (Linnaeus) C.Agardh marine SYMPHYOCLADIELLA D.E.Bustamante, B.Y.Won & T.O.Cho parasitica (Hudson) D.Bustamante, B.Y.Won, S.C.Lindstrom & T.O.Cho marine VERTEBRATA S.F.Gray byssoides (Goodenough & Woodward) Kuntze marine

76 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

foetidissima (Cocks ex Bornet) Díaz-Tapia & Maggs marine fruticulosa (Wulfen) Kuntze marine fucoides (Hudson) Kuntze marine furcellata (C.Agardh) Kuntze marine lanosa (Linnaeus) T.A.Christensen marine nigra (Hudson) Díaz-Tapia & Maggs marine reptabunda (Suhr) Díaz-Tapia & Maggs marine simulans (Harvey) Kuntze marine subulifera (C.Agardh) Kuntze marine thuyoides (Harvey) Kuntze marine XIPHOSIPHONIA Savoie & G.W.Saunders ardreana (Maggs & Hommersand) Savoie & G.W.Saunders marine pennata (C.Agardh) Savoie & G.W.Saunders marine Wrangeliaceae BORNETIA Thuret secundiflora (J.Agardh) Thuret marine COMPSOTHAMNION (Nägeli) F.Schmitz decompositum (J.Agardh) Maggs & L'Hardy-Halos marine gracillimum De Toni marine thuioides (Smith) Nägeli marine GRIFFITHSIA C.Agardh corallinoides (Linnaeus) Trevisan marine devoniensis Harvey marine HALURUS Kützing equisetifolius (Lightfoot) Kützing marine flosculosus (J.Ellis) Maggs & Hommersand marine MONOSPORUS Solier pedicellatus (Smith) Solier marine PLEONOSPORIUM Nägeli borreri (Smith) Nägeli marine PLUMARIA F.Schmitz plumosa (Hudson) Kuntze marine PTILOTA C.Agardh gunneri P.C.Silva, Maggs & L.M.Irvine marine PTILOTHAMNION Thuret pluma (Dillwyn) Thuret marine sphaericum (P.Crouan & H.Crouan ex J.Agardh) Maggs & Hommersand marine SPERMOTHAMNION Areschoug irregulare (J.Agardh) Ardissone marine repens (Dillwyn) Magnus marine strictum (C.Agardh) Ardissone marine SPHONDYLOTHAMNION Nägeli multifidum (Hudson) Nägeli marine COLACONEMATALES Colaconemataceae COLACONEMA Batters asparagopsis Chemin marine bonnemaisoniae Batters marine caespitosum (J.Agardh) Jackelman, Stegenga & J.J.Bolton marine chylocladiae Batters marine corymbiferum (Thuret) Alongi, Cormaci & G.Furnari marine

77 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

daviesii (Dillwyn) Stegenga marine emergens (Rosenvinge) R.Nielsen marine infestans (M.Howe & Hoyt) Woelkerling marine minimum (Collins) Woelkerling marine savianum (Meneghini) R.Nielsen marine CORALLINALES Corallinaceae CORALLINA Linnaeus ferreyrae E.Y.Dawson, Acleto & Foldvik marine officinalis Linnaeus marine ELLISOLANDIA K.R.Hind & G.W.Saunders elongata (J.Ellis & Solander) K.R.Hind & G.W.Saunders marine JANIA J.V.Lamouroux rubens (Linnaeus) J.V.Lamouroux marine squamata (Linnaeus) J.H.Kim, Guiry & H.-G.Choi marine squamata (Linnaeus) J.H.Kim, Guiry & H.-G.Choi marine virgata (Zanardini) Montagne marine PNEOPHYLLUM Kützing confervicola (Kützing) Y.M.Chamberlain marine coronatum (Rosanoff) Penrose marine fragile Kützing marine limitatum (Foslie) Y.M.Chamberlain marine myriocarpum (P.Crouan & H.Crouan) Y.M.Chamberlain marine zonale (P.Crouan & H.Crouan) Y.M.Chamberlain marine Hydrolithaceae HYDROLITHON (Foslie) Foslie boreale (Foslie) Y.M.Chamberlain marine cruciatum (Bressan) Y.M.Chamberlain marine farinosum (J.V.Lamouroux) Penrose & Y.M.Chamberlain marine Lithophyllaceae LITHOPHYLLUM Philippi byssoides (Lamarck) Foslie marine corallinae (P.Crouan & H.Crouan) Heydrich marine crouaniorum Foslie marine dentatum (Kützing) Foslie marine hibernicum Foslie marine incrustans Philippi marine nitorum W.H.Adey & P.J.Adey marine orbiculatum (Foslie) Foslie marine racemus (Lamarck) Foslie marine TITANODERMA Nägeli laminariae (P.Crouan & H.Crouan) Y.M.Chamberlain marine pustulatum (J.V.Lamouroux) Nägeli marine Lithothamniaceae LITHOTHAMNION Heydrich corallioides (P.Crouan & H.Crouan) P.Crouan & H.Crouan marine erinaceum Melbourne & J.Brodie marine glaciale Kjellman marine sonderi Hauck marine tophiforme (Esper) Unger marine

78 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

PHYMATOLITHON Foslie brunneum Y.M.Chamberlain marine calcareum (Pallas) W.H.Adey & D.L.McKibbin ex Woelkering & L.M.Irvine marine laevigatum (Foslie) Foslie marine lamii (Me.Lemoine) Y.M.Chamberlain marine lenormandii (Areschoug) W.H.Adey marine lusitanicum V.Peña marine purpureum (P.Crouan & H.Crouan) Woelkerling & L.M.Irvine marine rugulosum W.H.Adey marine Porolithaceae HARVEYLITHON A.Rösler, Perfectti, V.Peña & J.C.Braga samoënse (Foslie) A.Rösler, Perfectti, V.Peña & J.C.Braga marine Spongitaceae NEOGONIOLITHON Setchell & L.R.Mason hauckii (Rothpletz) R.A.Townsend & Huisman marine SPONGITES Kützing fruticulosus Kützing marine GELIDIALES Gelidiaceae GELIDIUM J.V.Lamouroux attenuatum (Turner) Thuret marine corneum (Hudson) J.V.Lamouroux marine crinale (Hare ex Turner) Gaillon marine maggsiae Rico & Guiry marine pulchellum (Turner) Kützing marine pusillum (Stackhouse) Le Jolis marine spinosum (S.G.Gmelin) P.C.Silva marine Gelidiellaceae GELIDIELLA Feldmann & G.Hamel calcicola Maggs & Guiry marine Pterocladiaceae PTEROCLADIELLA B.Santelices & Hommersand capillacea (S.G.Gmelin) Santelices & Hommersand marine GIGARTINALES Calosiphoniaceae SCHMITZIA P.C.Silva hiscockiana Maggs & Guiry marine neapolitana (Berthold) P.C.Silva marine Caulacanthaceae CATENELLA Greville caespitosa (Withering) L.M.Irvine marine Cruoriaceae CRUORIA Fries cruoriiformis (P.Crouan & H.Crouan) Denizot marine pellita (Lyngbye) Fries marine Cystocloniaceae CALLIBLEPHARIS Kützing ciliata (Hudson) Kützing marine jubata (Goodenough & Woodward) Kützing marine CYSTOCLONIUM Kützing purpureum (Hudson) Batters marine

79 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

RHODOPHYLLIS Kützing divaricata (Stackhouse) Papenfuss marine irvineorum Guiry, Maggs & Bunker marine Dumontiaceae DILSEA Stackhouse carnosa (Schmidel) Kuntze marine DUDRESNAYA P.Crouan & H.Crouan verticillata (Withering) Le Jolis marine DUMONTIA J.V.Lamouroux contorta (S.G.Gmelin) Ruprecht marine Furcellariaceae FURCELLARIA J.V.Lamouroux lumbricalis (Hudson) J.V.Lamouroux marine HALARACHNION Kützing ligulatum (Woodward) Kützing marine Gigartinaceae CHONDRACANTHUS Kützing acicularis (Roth) Fredericq marine teedei (Mertens ex Roth) Kützing marine CHONDRUS Stackhouse crispus Stackhouse marine GIGARTINA Stackhouse pistillata (S.G.Gmelin) Stackhouse marine Gloiosiphoniaceae GLOIOSIPHONIA Carmichael capillaris (Hudson) Carmichael marine PLAGIOSPORA Kuckuck gracilis Kuckuck marine Haemeschariaceae HAEMESCHARIA Kjellman hennedyi (Harvey) K.L.Vinogradova & Yacovleva marine Kallymeniaceae CALLOCOLAX F.Schmitz ex Batters neglectus F.Schmitz ex Batters marine CALLOPHYLLIS Kützing flabellata P.Crouan & H.Crouan marine KALLYMENIA J.Agardh reniformis (Turner) J.Agardh marine MEREDITHIA J.Agardh microphylla (J.Agardh) J.Agardh marine METACALLOPHYLLIS A.Vergés & L.Le Gall laciniata (Hudson) A.Vergés & L.Le Gall marine Phyllophoraceae AHNFELTIOPSIS P.C.Silva & DeCew devoniensis (Greville) P.C.Silva & DeCew marine COCCOTYLUS Kützing brodiei (Turner) Kützing marine hartzii (Rosenvinge) Le Gall & G.W.Saunders marine truncatus (Pallas) M.J.Wynne & J.N.Heine marine ERYTHRODERMIS Batters traillii (Holmes ex Batters) Guiry & Garbary marine

80 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

FREDERICQIA Maggs, L.Le Gall, Mineur, Provan & G.W.Saunders deveauniensis Maggs, L.Le Gall, Mineur, Provan & G.W.Saunders marine GYMNOGONGRUS C.Martius crenulatus (Turner) J.Agardh marine griffithsiae (Turner) C.Martius marine MASTOCARPUS Kützing stellatus (Stackhouse) Guiry marine PHYLLOPHORA Greville crispa (Hudson) P.S.Dixon marine pseudoceranoïdes (S.G.Gmelin) Newroth & A.R.A.Taylor ex P.S.Dixon & L.M.Irvine marine sicula (Kützing) Guiry & L.M.Irvine marine SCHOTTERA Guiry & Hollenberg nicaeensis (J.V.Lamouroux ex Duby) Guiry & Hollenberg marine STENOGRAMMA Harvey interruptum (C.Agardh) Montagne marine Polyidaceae POLYIDES C.Agardh rotunda (Hudson) Gaillon marine Rhizophyllidaceae PORTIERIA Zanardini dichotoma (Hauck) P.C.Silva marine Schmitziellaceae SCHMITZIELLA Bornet & Batters endophloea Bornet & Batters marine Sphaerococcaceae SPHAEROCOCCUS Stackhouse coronopifolius Stackhouse marine GRACILARIALES Gracilariaceae AGAROPHYTON Gurgel, J.N.Norris & Fredericq vermiculophyllum (Ohmi) Gurgel, J.N.Norris et Fredericq marine GRACILARIA Greville bursa-pastoris (S.G.Gmelin) P.C.Silva marine foliifera (Forsskål) Børgesen marine gracilis (Stackhouse) Steentoft, L.M.Irvine & Farnham marine multipartita (Clemente) Harvey marine GRACILARIOPSIS E.Y.Dawson longissima (S.G.Gmelin) Steentoft, L.M.Irvine & Farnham marine HYDROPUNTIA Montagne edulis (S.G.Gmelin) Gurgel & Fredericq marine HALYMENIALES Halymeniaceae CRYPTONEMIA J.Agardh hibernica Guiry & L.M.Irvine marine palmetta (S.G.Gmelin) Woelkering, G.Furnari, Cormaci & J.McNeill marine DERMOCORYNUS P.Crouan & H.Crouan dichotomus (J.Agardh) Gargiulo, M.Morabito & Manghisi marine montagnei P.Crouan & H.Crouan marine GRATELOUPIA C.Agardh filicina (J.V.Lamouroux) C.Agardh marine minima P.Crouan & H.Crouan marine

81 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

NESOIA H.W.Lee & M.S.Kim latifolia (P.Crouan & H.Crouan ex Kützing) H.W.Lee & M.S.Kim marine HAPALIDIALES Hapalidiaceae CHOREONEMA F.Schmitz thuretii (Bornet) F.Schmitz marine MELOBESIA J.V.Lamouroux membranacea (Esper) J.V.Lamouroux marine Mesophyllumaceae CLATHROMORPHUM Foslie circumscriptum (Strömfelt) Foslie marine compactum (Kjellman) Foslie marine MESOPHYLLUM Me.Lemoine lichenoides (J.Ellis) Me.Lemoine marine HILDENBRANDIALES Hildenbrandiaceae HILDENBRANDIA Nardo crouaniorum J.Agardh marine rivularis (Liebmann) J.Agardh freshwater rubra (Sommerfelt) Meneghini marine NEMALIALES Liagoraceae HELMINTHOCLADIA J.Agardh calvadosii (J.V.Lamouroux ex Duby) Setchell marine hudsonii J.Agardh marine HELMINTHORA J.Agardh divaricata (C.Agardh) J.Agardh marine Nemaliaceae NEMALION Duby elminthoides (Velley) Batters marine multifidum (Lyngbye) Chauvin marine Scinaiaceae SCINAIA Bivona-Bernardi complanata (Collins) A.D.Cotton marine furcellata (Turner) J.Agardh marine interrupta (A.P.de Candolle) M.J.Wynne marine NEMASTOMATALES Nemastomataceae ITONOA Masuda & Guiry marginifera (J.Agardh) Masuda & Guiry marine NEMASTOMA J.Agardh canariense (Kützing) Montagne marine Schizymeniaceae SCHIZYMENIA J.Agardh dubyi (Chauvin ex Duby) J.Agardh marine PALMARIALES Meiodiscaceae MEIODISCUS G.W.Saunders & McLachlan concrescens (K.M.Drew) P.W.Gabrielson marine spetsbergensis (Kjellman) G.W.Saunders & McLachlan marine RUBROINTRUSA S.L.Clayden & G.W.Saunders membranacea (Magnus) S.L.Clayden & G.W.Saunders marine

82 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

Palmariaceae PALMARIA Stackhouse palmata (Linnaeus) F.Weber & D.Mohr marine Rhodophysemataceae RHODOPHYSEMA Batters elegans (P.Crouan & H.Crouan ex J.Agardh) P.S.Dixon marine feldmannii Cabioch marine georgei Batters marine lundii (Edelstein) C.W.Schneider & M.J.Wynne marine Rhodothamniellaceae RHODOTHAMNIELLA Feldmann floridula (Dillwyn) Feldmann marine PEYSSONNELIALES Peyssonneliaceae CRUORIOPSIS Dufour hauckii Batters marine PEYSSONNELIA Decaisne armorica (P.Crouan & H.Crouan) Weber Bosse marine atropurpurea P.Crouan & H.Crouan marine dubyi P.Crouan & H.Crouan marine harveyana P.Crouan & H.Crouan ex J.Agardh marine immersa Maggs & L.M.Irvine marine rubra (Greville) J.Agardh marine PLOCAMIALES Plocamiaceae PLOCAMIUM J.V.Lamouroux cartilagineum (Linnaeus) P.S.Dixon marine lyngbyanum Kützing marine maggsiae G.W.Saunders & Lehmkuhl marine RHODYMENIALES Champiaceae CHAMPIA Desvaux parvula (C.Agardh) Harvey marine CHYLOCLADIA Greville verticillata (Lightfoot) Bliding marine GASTROCLONIUM Kützing ovatum (Hudson) Papenfuss marine reflexum (Chauvin) Kützing marine Lomentariaceae LOMENTARIA Lyngbye articulata (Hudson) Lyngbye marine clavellosa (Lightfoot ex Turner) Gaillon marine orcadensis (Harvey) Collins marine Rhodymeniaceae CORDYLECLADIA J.Agardh erecta (Greville) J.Agardh marine RHODYMENIA Greville ardissonei (Kuntze) Feldmann marine delicatula P.J.L.Dangeard marine holmesii Ardissone marine pseudopalmata (J.V.Lamouroux) P.C.Silva marine PORPHYRIDIOPHYCEAE

83 M.D. Guiry A Preliminary Check-list of the Algae of Ireland 2019

PORPHYRIDIALES Porphyridiaceae PORPHYRIDIUM Nägeli purpureum (Bory) K.M.Drew & R.Ross ubiquitous RHODOPHYTA CLASSIS INCERTAE SEDIS RHODOPHYTA ORDO INCERTAE SEDIS Pterocladiophilaceae HOLMSELLA Sturch pachyderma (Reinsch) Sturch marine STYLONEMATOPHYCEAE STYLONEMATALES Stylonemataceae CHROODACTYLON Hansgirg ornatum (C.Agardh) Basson marine COLACODICTYON Feldmann reticulatum (Batters) Feldmann marine NEEVEA Batters repens Batters marine STYLONEMA Reinsch alsidii (Zanardini) K.M.Drew marine

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