Notes on Ascomycete Systematics Nos. 4408 - 4750
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Castanedospora, a New Genus to Accommodate Sporidesmium
Cryptogamie, Mycologie, 2018, 39 (1): 109-127 © 2018 Adac. Tous droits réservés South Florida microfungi: Castanedospora,anew genus to accommodate Sporidesmium pachyanthicola (Capnodiales, Ascomycota) Gregorio DELGADO a,b*, Andrew N. MILLER c & Meike PIEPENBRING b aEMLab P&K Houston, 10900 BrittmoorePark Drive Suite G, Houston, TX 77041, USA bDepartment of Mycology,Institute of Ecology,Evolution and Diversity, Goethe UniversitätFrankfurt, Max-von-Laue-Str.13, 60438 Frankfurt am Main, Germany cIllinois Natural History Survey,University of Illinois, 1816 South Oak Street, Champaign, IL 61820, USA Abstract – The taxonomic status and phylogenetic placement of Sporidesmium pachyanthicola in Capnodiales(Dothideomycetes) are revisited based on aspecimen collected on the petiole of adead leaf of Sabal palmetto in south Florida, U.S.A. New evidence inferred from phylogenetic analyses of nuclear ribosomal DNA sequence data together with abroad taxon sampling at family level suggest that the fungus is amember of Extremaceaeand therefore its previous placement within the broadly defined Teratosphaeriaceae was not supported. Anew genus Castanedospora is introduced to accommodate this species on the basis of its distinct morphology and phylogenetic position distant from Sporidesmiaceae sensu stricto in Sordariomycetes. The holotype material from Cuba was found to be exhausted and the Florida specimen, which agrees well with the original description, is selected as epitype. The fungus produced considerably long cylindrical to narrowly obclavate conidia -
Phylogeny of the Cetrarioid Core (Parmeliaceae) Based on Five
The Lichenologist 41(5): 489–511 (2009) © 2009 British Lichen Society doi:10.1017/S0024282909990090 Printed in the United Kingdom Phylogeny of the cetrarioid core (Parmeliaceae) based on five genetic markers Arne THELL, Filip HÖGNABBA, John A. ELIX, Tassilo FEUERER, Ingvar KÄRNEFELT, Leena MYLLYS, Tiina RANDLANE, Andres SAAG, Soili STENROOS, Teuvo AHTI and Mark R. D. SEAWARD Abstract: Fourteen genera belong to a monophyletic core of cetrarioid lichens, Ahtiana, Allocetraria, Arctocetraria, Cetraria, Cetrariella, Cetreliopsis, Flavocetraria, Kaernefeltia, Masonhalea, Nephromopsis, Tuckermanella, Tuckermannopsis, Usnocetraria and Vulpicida. A total of 71 samples representing 65 species (of 90 worldwide) and all type species of the genera are included in phylogentic analyses based on a complete ITS matrix and incomplete sets of group I intron, -tubulin, GAPDH and mtSSU sequences. Eleven of the species included in the study are analysed phylogenetically for the first time, and of the 178 sequences, 67 are newly constructed. Two phylogenetic trees, one based solely on the complete ITS-matrix and a second based on total information, are similar, but not entirely identical. About half of the species are gathered in a strongly supported clade composed of the genera Allocetraria, Cetraria s. str., Cetrariella and Vulpicida. Arctocetraria, Cetreliopsis, Kaernefeltia and Tuckermanella are monophyletic genera, whereas Cetraria, Flavocetraria and Tuckermannopsis are polyphyletic. The taxonomy in current use is compared with the phylogenetic results, and future, probable or potential adjustments to the phylogeny are discussed. The single non-DNA character with a strong correlation to phylogeny based on DNA-sequences is conidial shape. The secondary chemistry of the poorly known species Cetraria annae is analyzed for the first time; the cortex contains usnic acid and atranorin, whereas isonephrosterinic, nephrosterinic, lichesterinic, protolichesterinic and squamatic acids occur in the medulla. -
Cryptic Species and Species Pairs in Lichens: a Discussion on the Relationship Between Molecular Phylogenies and Morphological Characters
cryptic species:07-Cryptic_species 10/12/2009 13:19 Página 71 Anales del Jardín Botánico de Madrid Vol. 66S1: 71-81, 2009 ISSN: 0211-1322 doi: 10.3989/ajbm.2225 Cryptic species and species pairs in lichens: A discussion on the relationship between molecular phylogenies and morphological characters by Ana Crespo & Sergio Pérez-Ortega Departamento de Biología Vegetal II, Facultad de Farmacia, Universidad Complutense de Madrid, E-28040 Madrid, Spain [email protected], [email protected] Abstract Resumen Crespo, A. & Pérez-Ortega, S. 2009. Cryptic species and species Crespo, A. & Pérez-Ortega, S. 2009. Especies crípticas y pares de pairs in lichens: A discussion on the relationship between mole- especies en líquenes: una discusión sobre la relación entre la fi- cular phylogenies and morphological characters. Anales Jard. logenia molecular y los caracteres morfológicos. Anales Jard. Bot. Madrid 66S1: 71-81. Bot. Madrid 66S1: 71-81 (en inglés). As with most disciplines in biology, molecular genetics has re- Como en otras disciplinas, el impacto producido por la filogenia volutionized our understanding of lichenized fungi. Nowhere molecular en el conocimiento de los hongos liquenizados ha has this been more true than in systematics, especially in the de- producido avances y cambios conceptuales importantes. Esto limitation of species. In many cases, molecular research has ve- ha sido especialmente cierto en la sistemática y ha afectado de rified long-standing hypotheses, but in others, results appear to una manera muy notable en aspectos -
Sendtnera 1: 273-280
. © Biodiversity Heritage Library, http://www.biodiversitylibrary.org/; www.biologiezentrum.at 273 Notes on the Genus Sagediopsis (Verrucariales, Adelococcaceae) by D. Triebel Abstract: Triebel, D.: Notes on the genus Sagediopsis (Verrucariales, Adelococcaceae). - Sendtnera 1: 273-280. ISSN 0944-0178. Notes on the genus Sagediopsis are given. Sagediopsis dissimilis Triebel is described as a new species and treated in detail. This lichenicolous fungus is confined to the lecideoid lichen Paraporpidia leptocarpa and occurs in Australasia. Sagediopsis is closely related to Adelococcus. Both genera are placed in a new family of the Verrucariales, Adelococcaceae Triebel. The family includes lichenicolous, non-lichenized taxa with persistent interascal filaments. 1. Introduction The order Verrucariales Mattick ex D. Hawksw. & 0. Eriksson includes until now only one family, the Verrucariaceae Zenker, which comprizes mainly lichenized ascortiycetes. It is characterized by globose, mainly clypeate and at least apically dark brown perithecioid ascomata. The hamathecial elements are confined to the ostiolar canal. The asci of the Vernicaria-type are broadly clavate, apically equally thick-walled and have constantly non- amyloid inner wall layers (see ERIKSSON 1981, Hawksworth & ERIKSSON 1986). The hymenial gel and the external ascus wall layer fi-equently turn red in Lugol's iodine solution. The majority of the c. 800 known Verrucarialean taxa develops two-biont lichen associations. Only a few lichenicolous lichens establishing three-biont associations are known (RAMBOLD& Triebel 1992, checklist C). Just recently, some groups of non-lichenized fijngi with lichenicolous, algicolous or hepaticolous life habit were placed in the order Verrucariales. These are the genera Endococcus Nyl., Merismatium Zopf, Muellerella Hepp ex Müll. -
Mycosphere Notes 225–274: Types and Other Specimens of Some Genera of Ascomycota
Mycosphere 9(4): 647–754 (2018) www.mycosphere.org ISSN 2077 7019 Article Doi 10.5943/mycosphere/9/4/3 Copyright © Guizhou Academy of Agricultural Sciences Mycosphere Notes 225–274: types and other specimens of some genera of Ascomycota Doilom M1,2,3, Hyde KD2,3,6, Phookamsak R1,2,3, Dai DQ4,, Tang LZ4,14, Hongsanan S5, Chomnunti P6, Boonmee S6, Dayarathne MC6, Li WJ6, Thambugala KM6, Perera RH 6, Daranagama DA6,13, Norphanphoun C6, Konta S6, Dong W6,7, Ertz D8,9, Phillips AJL10, McKenzie EHC11, Vinit K6,7, Ariyawansa HA12, Jones EBG7, Mortimer PE2, Xu JC2,3, Promputtha I1 1 Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand 2 Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, 132 Lanhei Road, Kunming 650201, China 3 World Agro Forestry Centre, East and Central Asia, 132 Lanhei Road, Kunming 650201, Yunnan Province, People’s Republic of China 4 Center for Yunnan Plateau Biological Resources Protection and Utilization, College of Biological Resource and Food Engineering, Qujing Normal University, Qujing, Yunnan 655011, China 5 Shenzhen Key Laboratory of Microbial Genetic Engineering, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China 6 Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand 7 Department of Entomology and Plant Pathology, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand 8 Department Research (BT), Botanic Garden Meise, Nieuwelaan 38, BE-1860 Meise, Belgium 9 Direction Générale de l'Enseignement non obligatoire et de la Recherche scientifique, Fédération Wallonie-Bruxelles, Rue A. -
Phylogeny of Rosellinia Capetribulensis Sp. Nov. and Its Allies (Xylariaceae)
Mycologia, 97(5), 2005, pp. 1102–1110. # 2005 by The Mycological Society of America, Lawrence, KS 66044-8897 Phylogeny of Rosellinia capetribulensis sp. nov. and its allies (Xylariaceae) J. Bahl1 research of the fungi occurring on palms has shown R. Jeewon this particular substrate to be a source of fungal K.D. Hyde diversity (Fro¨hlich and Hyde 2000, Taylor and Hyde Centre for Research in Fungal Diversity, Department of 2003). In continuing studies, we discovered saprobic Ecology & Biodiversity, The University of Hong Kong, fungi on fronds of various palm species (i.e., Pokfulam Road, Hong Kong S.A.R., P.R. China Archontopheonix, Calamus, Livistona) in Northern Queensland and revealed a number of unique fungi. We describe a new species in the genus Rosellinia Abstract: A new Rosellinia species, R. capetribulensis from Calamus sp. isolated from Calamus sp. in Australia is described. R. Most work on Rosellinia has focused on species capetribulensis is characterized by perithecia im- from different geographical regions. Petrini (1992, mersed within a carbonaceous stroma surrounded 2003) compared Rosellinia species from temperate by subiculum-like hyphae, asci with large, barrel- zones and New Zealand. Rogers et al (1987) noted the shaped amyloid apical apparatus and large dark rarity of Rosellinia species in tropical rain forests of brown spores. Morphologically, R. capetribulensis North Sulawesi, Indonesia. In studies of fungi from appears to be similar to R. bunodes, R. markhamiae palm hosts, Smith and Hyde (2001) indexed twelve and R. megalospora. To gain further insights into the Rosellinia species from tropical palm hosts. Rosellinia phylogeny of this new taxon we analyzed the ITS-5.8S species are not frequently isolated when compared to rDNA using maximum parsimony and likelihood other xylariacieous fungi recorded from palm leaf methods. -
One Hundred New Species of Lichenized Fungi: a Signature of Undiscovered Global Diversity
Phytotaxa 18: 1–127 (2011) ISSN 1179-3155 (print edition) www.mapress.com/phytotaxa/ Monograph PHYTOTAXA Copyright © 2011 Magnolia Press ISSN 1179-3163 (online edition) PHYTOTAXA 18 One hundred new species of lichenized fungi: a signature of undiscovered global diversity H. THORSTEN LUMBSCH1*, TEUVO AHTI2, SUSANNE ALTERMANN3, GUILLERMO AMO DE PAZ4, ANDRÉ APTROOT5, ULF ARUP6, ALEJANDRINA BÁRCENAS PEÑA7, PAULINA A. BAWINGAN8, MICHEL N. BENATTI9, LUISA BETANCOURT10, CURTIS R. BJÖRK11, KANSRI BOONPRAGOB12, MAARTEN BRAND13, FRANK BUNGARTZ14, MARCELA E. S. CÁCERES15, MEHTMET CANDAN16, JOSÉ LUIS CHAVES17, PHILIPPE CLERC18, RALPH COMMON19, BRIAN J. COPPINS20, ANA CRESPO4, MANUELA DAL-FORNO21, PRADEEP K. DIVAKAR4, MELIZAR V. DUYA22, JOHN A. ELIX23, ARVE ELVEBAKK24, JOHNATHON D. FANKHAUSER25, EDIT FARKAS26, LIDIA ITATÍ FERRARO27, EBERHARD FISCHER28, DAVID J. GALLOWAY29, ESTER GAYA30, MIREIA GIRALT31, TREVOR GOWARD32, MARTIN GRUBE33, JOSEF HAFELLNER33, JESÚS E. HERNÁNDEZ M.34, MARÍA DE LOS ANGELES HERRERA CAMPOS7, KLAUS KALB35, INGVAR KÄRNEFELT6, GINTARAS KANTVILAS36, DOROTHEE KILLMANN28, PAUL KIRIKA37, KERRY KNUDSEN38, HARALD KOMPOSCH39, SERGEY KONDRATYUK40, JAMES D. LAWREY21, ARMIN MANGOLD41, MARCELO P. MARCELLI9, BRUCE MCCUNE42, MARIA INES MESSUTI43, ANDREA MICHLIG27, RICARDO MIRANDA GONZÁLEZ7, BIBIANA MONCADA10, ALIFERETI NAIKATINI44, MATTHEW P. NELSEN1, 45, DAG O. ØVSTEDAL46, ZDENEK PALICE47, KHWANRUAN PAPONG48, SITTIPORN PARNMEN12, SERGIO PÉREZ-ORTEGA4, CHRISTIAN PRINTZEN49, VÍCTOR J. RICO4, EIMY RIVAS PLATA1, 50, JAVIER ROBAYO51, DANIA ROSABAL52, ULRIKE RUPRECHT53, NORIS SALAZAR ALLEN54, LEOPOLDO SANCHO4, LUCIANA SANTOS DE JESUS15, TAMIRES SANTOS VIEIRA15, MATTHIAS SCHULTZ55, MARK R. D. SEAWARD56, EMMANUËL SÉRUSIAUX57, IMKE SCHMITT58, HARRIE J. M. SIPMAN59, MOHAMMAD SOHRABI 2, 60, ULRIK SØCHTING61, MAJBRIT ZEUTHEN SØGAARD61, LAURENS B. SPARRIUS62, ADRIANO SPIELMANN63, TOBY SPRIBILLE33, JUTARAT SUTJARITTURAKAN64, ACHRA THAMMATHAWORN65, ARNE THELL6, GÖRAN THOR66, HOLGER THÜS67, EINAR TIMDAL68, CAMILLE TRUONG18, ROMAN TÜRK69, LOENGRIN UMAÑA TENORIO17, DALIP K. -
Volatile Constituents of Endophytic Fungi Isolated from Aquilaria Sinensis with Descriptions of Two New Species of Nemania
life Article Volatile Constituents of Endophytic Fungi Isolated from Aquilaria sinensis with Descriptions of Two New Species of Nemania Saowaluck Tibpromma 1,2,3,†, Lu Zhang 4,†, Samantha C. Karunarathna 1,2,3, Tian-Ye Du 1,2,3, Chayanard Phukhamsakda 5,6 , Munikishore Rachakunta 7 , Nakarin Suwannarach 8,9 , Jianchu Xu 1,2,3,*, Peter E. Mortimer 1,2,3,* and Yue-Hu Wang 4,* 1 CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China; [email protected] (S.T.); [email protected] (S.C.K.); [email protected] (T.-Y.D.) 2 World Agroforestry Centre, East and Central Asia, Kunming 650201, China 3 Centre for Mountain Futures, Kunming Institute of Botany, Kunming 650201, China 4 Yunnan Key Laboratory for Fungal Diversity and Green Development, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China; [email protected] 5 Institute of Plant Protection, College of Agriculture, Jilin Agricultural University, Changchun 130118, China; [email protected] 6 Engineering Research Center of Chinese Ministry of Education for Edible and Medicinal Fungi, Jilin Agricultural University, Changchun 130118, China 7 State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China; [email protected] Citation: Tibpromma, S.; Zhang, L.; 8 Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand; Karunarathna, S.C.; Du, T.-Y.; [email protected] Phukhamsakda, C.; Rachakunta, M.; 9 Research Center of Microbial Diversity and Sustainable Utilization, Faculty of Science, Chiang Mai University, Suwannarach, N.; Xu, J.; Mortimer, Chiang Mai 50200, Thailand P.E.; Wang, Y.-H. -
One Hundred and Seventy-Five New Species of Graphidaceae: Closing the Gap Or a Drop in the Bucket?
Phytotaxa 189 (1): 007–038 ISSN 1179-3155 (print edition) www.mapress.com/phytotaxa/ Article PHYTOTAXA Copyright © 2014 Magnolia Press ISSN 1179-3163 (online edition) http://dx.doi.org/10.11646/phytotaxa.189.1.4 One hundred and seventy-five new species of Graphidaceae: closing the gap or a drop in the bucket? ROBERT LÜCKING1, MARK K. JOHNSTON1, ANDRÉ APTROOT2, EKAPHAN KRAICHAK1, JAMES C. LENDEMER3, KANSRI BOONPRAGOB4, MARCELA E. S. CÁCERES5, DAMIEN ERTZ6, LIDIA ITATI FERRARO7, ZE-FENG JIA8, KLAUS KALB9,10, ARMIN MANGOLD11, LEKA MANOCH12, JOEL A. MERCADO-DÍAZ13, BIBIANA MONCADA14, PACHARA MONGKOLSUK4, KHWANRUAN BUTSATORN PAPONG 15, SITTIPORN PARNMEN16, ROUCHI N. PELÁEZ14, VASUN POENGSUNGNOEN17, EIMY RIVAS PLATA1, WANARUK SAIPUNKAEW18, HARRIE J. M. SIPMAN19, JUTARAT SUTJARITTURAKAN10,18, DRIES VAN DEN BROECK6, MATT VON KONRAT1, GOTHAMIE WEERAKOON20 & H. THORSTEN 1 LUMBSCH 1Science & Education, The Field Museum, 1400 South Lake Shore Drive, Chicago, Illinois 60605-2496, U.S.A.; email: [email protected], [email protected], [email protected], [email protected] 2ABL Herbarium, G.v.d.Veenstraat 107, NL-3762 XK Soest, The Netherlands; email: [email protected] 3Institute of Systematic Botany, The New York Botanical Garden, Bronx, NY 10458-5126, U.S.A.; email: [email protected] 4Lichen Research Unit, Department of Biology, Faculty of Science, Ramkhamhaeng University, Ramkhamhaeng 24 road, Bangkok, 10240 Thailand; email: [email protected] 5Departamento de Biociências, Universidade Federal de Sergipe, CEP: 49500-000, -
Taxonomic Study of the Genus Anzia (Lecanorales, Lichenized Ascomycota) from Hengduan Mountains, China
See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/273766529 Taxonomic study of the genus Anzia (Lecanorales, lichenized Ascomycota) from Hengduan Mountains, China Article in The Lichenologist · March 2015 Impact Factor: 1.45 · DOI: 10.1017/S0024282914000644 READS 60 8 authors, including: Xinyu Wang Chinese Academy of Sciences 41 PUBLICATIONS 131 CITATIONS SEE PROFILE Bernard Goffinet University of Connecticut 155 PUBLICATIONS 2,761 CITATIONS SEE PROFILE Available from: Xinyu Wang Retrieved on: 03 June 2016 The Lichenologist 47(2): 99–115 (2015) r British Lichen Society, 2015 doi:10.1017/S0024282914000644 Taxonomic study of the genus Anzia (Lecanorales, lichenized Ascomycota) from Hengduan Mountains, China Xin Yu WANG, Bernard GOFFINET, Dong LIU, Meng Meng LIANG, Hai Xia SHI, Yan Yun ZHANG, Jun ZHANG and Li Song WANG Abstract: Analyses of morphological, anatomical, chemical and DNA sequences led to the recognition of ten species of Anzia in the Hengduan Mountains, which harbour all species known from China, including A. pseudocolpota sp.nov.andA. hypomelaena comb.&stat.nov.Furthermore,populations similar to A. hypoleucoides but with narrow lobes and a yellow-orange pigmented medulla may be a phylogenetically distinct species tentatively recognized as A. aff. hypoleucoides. The species are primarily distinguished by the presence or absence of a central axis, the colour and shape of the spongy cushion and the nature of the secondary compounds. A key to all known species of Anzia from China is presented. Key words: lichens, molecular phylogeny, Parmeliaceae, taxonomy, Yunnan Province Accepted for publication 7 November 2014 Introduction the asci containing eight spores and the yellow- green upper cortex (Darbishire 1912). -
Alectorioid Morphologies in Paleogene Lichens: New Evidence and Re-Evaluation of the Fossil Alectoria Succini Mägdefrau
RESEARCH ARTICLE Alectorioid Morphologies in Paleogene Lichens: New Evidence and Re-Evaluation of the Fossil Alectoria succini Mägdefrau Ulla Kaasalainen1*, Jochen Heinrichs2, Michael Krings3, Leena Myllys4, Heinrich Grabenhorst5, Jouko Rikkinen6, Alexander R. Schmidt1 1 Department of Geobiology, University of Göttingen, Göttingen, Germany, 2 Department of Biology and Geobio-Center, University of Munich (LMU), Munich, Germany, 3 Department of Earth and Environmental Sciences, University of Munich (LMU), and Bavarian State Collection for Palaeontology and Geology, Munich, Germany, 4 Finnish Museum of Natural History, University of Helsinki, Helsinki, Finland, 5 c/o Amber Study Group, Geological-Palaeontological Institute and Museum, University of Hamburg, Hamburg, Germany, 6 Department of Biosciences, University of Helsinki, Helsinki, Finland * [email protected] OPEN ACCESS Abstract Citation: Kaasalainen U, Heinrichs J, Krings M, One of the most important issues in molecular dating studies concerns the incorporation of Myllys L, Grabenhorst H, Rikkinen J, et al. (2015) Alectorioid Morphologies in Paleogene Lichens: New reliable fossil taxa into the phylogenies reconstructed from DNA sequence variation in ex- Evidence and Re-Evaluation of the Fossil Alectoria tant taxa. Lichens are symbiotic associations between fungi and algae and/or cyanobacte- succini Mägdefrau. PLoS ONE 10(6): e0129526. ria. Several lichen fossils have been used as minimum age constraints in recent studies doi:10.1371/journal.pone.0129526 concerning the diversification of the Ascomycota. Recent evolutionary studies of Lecanoro- Academic Editor: Peter Wilf, Penn State University, mycetes, an almost exclusively lichen-forming class in the Ascomycota, have utilized the UNITED STATES Eocene amber inclusion Alectoria succinic as a minimum age constraint. -
Two New Genera and Twelve New Species of Graphidaceae from Puerto Rico: a Case for Higher Endemism of Lichenized Fungi in Islands of the Caribbean?
Phytotaxa 189 (1): 186–203 ISSN 1179-3155 (print edition) www.mapress.com/phytotaxa/ Article PHYTOTAXA Copyright © 2014 Magnolia Press ISSN 1179-3163 (online edition) http://dx.doi.org/10.11646/phytotaxa.189.1.14 Two new genera and twelve new species of Graphidaceae from Puerto Rico: a case for higher endemism of lichenized fungi in islands of the Caribbean? JOEL A. MERCADO-DÍAZ1, ROBERT LÜCKING2 & SITTIPORN PARNMEN3 1International Institute of Tropical Forestry, USDA Forest Service, Ceiba St. 1201, Jardín Botánico Sur, Río Piedras 00926-1119, Puerto Rico; email: [email protected] 2Science & Education, The Field Museum, 1400 South Lake Shore Drive, Chicago, Illinois 60605-2496, U.S.A.; email: [email protected] 3Toxicology and Biochemistry Section, Department of Medical Sciences, Ministry of Public Health, Nonthaburi 11000 Thailand; email: [email protected] Abstract Two new genera and twelve new species of Graphidaceae are described from Puerto Rico. The two new genera, Borinquenotrema and Paratopeliopsis, are based on a combination of molecular sequence data and phenotype characters. Borinquenotrema, with the single new species B. soredicarpum, features rounded ascomata developing beneath and persistently covered with soralia and with an internal anatomy reminescent of Carbacanthographis; it is close to the tribe Ocellularieae. Paratopeliopsis, including the single new species P. caraibica, resembles a miniature Topeliopsis but differs in the distinctly farinose thallus and the small, brown ascospores; it is not closely related to the latter genus but belongs in tribe Thelotremateae. The other ten new species belong in the genera Acanthotrema, Clandestinotrema, Compositrema, Fissurina, Ocellularia, and Thalloloma. Acanthotrema alboisidiatum is closely related to A.