Ephemerum Homomallum
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Palustriella Pluristratosa Spec. Nov. (Amblystegiaceae, Bryopsida), a New Aquatic Moss Species with Pluristratose Lamina from Switzerland
Palustriella pluristratosa spec. nov. (Amblystegiaceae, Bryopsida), a new aquatic moss species with pluristratose lamina from Switzerland Autor(en): Stech, Michael / Frahm, Jan-Peter Objekttyp: Article Zeitschrift: Botanica Helvetica Band (Jahr): 111 (2001) Heft 2 PDF erstellt am: 06.10.2021 Persistenter Link: http://doi.org/10.5169/seals-73905 Nutzungsbedingungen Die ETH-Bibliothek ist Anbieterin der digitalisierten Zeitschriften. Sie besitzt keine Urheberrechte an den Inhalten der Zeitschriften. Die Rechte liegen in der Regel bei den Herausgebern. Die auf der Plattform e-periodica veröffentlichten Dokumente stehen für nicht-kommerzielle Zwecke in Lehre und Forschung sowie für die private Nutzung frei zur Verfügung. Einzelne Dateien oder Ausdrucke aus diesem Angebot können zusammen mit diesen Nutzungsbedingungen und den korrekten Herkunftsbezeichnungen weitergegeben werden. Das Veröffentlichen von Bildern in Print- und Online-Publikationen ist nur mit vorheriger Genehmigung der Rechteinhaber erlaubt. Die systematische Speicherung von Teilen des elektronischen Angebots auf anderen Servern bedarf ebenfalls des schriftlichen Einverständnisses der Rechteinhaber. Haftungsausschluss Alle Angaben erfolgen ohne Gewähr für Vollständigkeit oder Richtigkeit. Es wird keine Haftung übernommen für Schäden durch die Verwendung von Informationen aus diesem Online-Angebot oder durch das Fehlen von Informationen. Dies gilt auch für Inhalte Dritter, die über dieses Angebot zugänglich sind. Ein Dienst der ETH-Bibliothek ETH Zürich, Rämistrasse 101, 8092 -
Fossil Mosses: What Do They Tell Us About Moss Evolution?
Bry. Div. Evo. 043 (1): 072–097 ISSN 2381-9677 (print edition) DIVERSITY & https://www.mapress.com/j/bde BRYOPHYTEEVOLUTION Copyright © 2021 Magnolia Press Article ISSN 2381-9685 (online edition) https://doi.org/10.11646/bde.43.1.7 Fossil mosses: What do they tell us about moss evolution? MicHAEL S. IGNATOV1,2 & ELENA V. MASLOVA3 1 Tsitsin Main Botanical Garden of the Russian Academy of Sciences, Moscow, Russia 2 Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia 3 Belgorod State University, Pobedy Square, 85, Belgorod, 308015 Russia �[email protected], https://orcid.org/0000-0003-1520-042X * author for correspondence: �[email protected], https://orcid.org/0000-0001-6096-6315 Abstract The moss fossil records from the Paleozoic age to the Eocene epoch are reviewed and their putative relationships to extant moss groups discussed. The incomplete preservation and lack of key characters that could define the position of an ancient moss in modern classification remain the problem. Carboniferous records are still impossible to refer to any of the modern moss taxa. Numerous Permian protosphagnalean mosses possess traits that are absent in any extant group and they are therefore treated here as an extinct lineage, whose descendants, if any remain, cannot be recognized among contemporary taxa. Non-protosphagnalean Permian mosses were also fairly diverse, representing morphotypes comparable with Dicranidae and acrocarpous Bryidae, although unequivocal representatives of these subclasses are known only since Cretaceous and Jurassic. Even though Sphagnales is one of two oldest lineages separated from the main trunk of moss phylogenetic tree, it appears in fossil state regularly only since Late Cretaceous, ca. -
SPECIES FACT SHEET Ryszard's Racomitrium Moss
SPECIES FACT SHEET Common Name: Ryszard's racomitrium moss Scientific Name: Codriophorus ryszardii Recent synonyms: Racomitrium ryszardii. All reports of Racomitrium aquaticum (= Codriophorus aquaticus) from North America refer to Codriophorus ryszardii. Division: Bryophyta Class: Bryopsida Order: Grimmiales Family: Grimmiaceae Taxonomic Note: All North American records for Codriophorus aquaticus (= Racomitrium aquaticum) have been renamed Codriophorus ryszardii (= Racomitrium ryszardii), and C. aquaticum has been restricted to the Old World (Benarek-Ochyra 2000; Ochyra and Benarek-Ochyra 2004a). Nomenclature used in this species fact sheet follows the conspectus for the Racomitroideae proposed for use in the Bryophyte Flora of North America (Ochyra and Benarek-Ochyra 2004b). Technical Description: Plants trailing or to erect, 1-10 cm long, branched irregularly. Leaves green, yellow-green to blackish below, linear-lanceolate, straight or curved at shoot tips, imbricate when dry, 2- 4 mm long, 0.4-1 mm wide, tapered to a rounded, roughened tip; margins entire, recurved, lacking row of large thin-walled cells at base; costa forming prominent keel at back of leaf, extending nearly to leaf tip and never forming an awn; leaf cells multipapillose, the cell walls sinuose-wavy. Setae 4-8 mm long, twisted clockwise when dry. Capsules 2-3 mm long, cylindrical. Peristome teeth 0.6-0.8 mm long. Distinctive characters: (1) Leaf cells multipapillose, (2) leaves imbricate, strongly keeled and consistently awnless, (3) leaves bright green to yellow-green, (4) peristome 1 mm long, (5) moist shaded rock substrate. Similar species: Codriophorus varius (= Racomitrium varium) is very similar, but (1) usually at least some of its leaves have distinct awns, (2) its peristome teeth are an astonishing 1-1.7 mm long, forming a tepee-shaped cone that is frequently broken, and (3) its habitat on rocks, logs and soil is usually drier than that of C. -
New National and Regional Bryophyte Records, 63
Journal of Bryology ISSN: 0373-6687 (Print) 1743-2820 (Online) Journal homepage: https://www.tandfonline.com/loi/yjbr20 New national and regional bryophyte records, 63 L. T. Ellis, O. M. Afonina, I. V. Czernyadjeva, L. A. Konoreva, A. D. Potemkin, V. M. Kotkova, M. Alataş, H. H. Blom, M. Boiko, R. A. Cabral, S. Jimenez, D. Dagnino, C. Turcato, L. Minuto, P. Erzberger, T. Ezer, O. V. Galanina, N. Hodgetts, M. S. Ignatov, A. Ignatova, S. G. Kazanovsky, T. Kiebacher, H. Köckinger, E. O. Korolkova, J. Larraín, A. I. Maksimov, D. Maity, A. Martins, M. Sim-Sim, F. Monteiro, L. Catarino, R. Medina, M. Nobis, A. Nowak, R. Ochyra, I. Parnikoza, V. Ivanets, V. Plášek, M. Philippe, P. Saha, Md. N. Aziz, A. V. Shkurko, S. Ştefănuţ, G. M. Suárez, A. Uygur, K. Erkul, M. Wierzgoń & A. Graulich To cite this article: L. T. Ellis, O. M. Afonina, I. V. Czernyadjeva, L. A. Konoreva, A. D. Potemkin, V. M. Kotkova, M. Alataş, H. H. Blom, M. Boiko, R. A. Cabral, S. Jimenez, D. Dagnino, C. Turcato, L. Minuto, P. Erzberger, T. Ezer, O. V. Galanina, N. Hodgetts, M. S. Ignatov, A. Ignatova, S. G. Kazanovsky, T. Kiebacher, H. Köckinger, E. O. Korolkova, J. Larraín, A. I. Maksimov, D. Maity, A. Martins, M. Sim-Sim, F. Monteiro, L. Catarino, R. Medina, M. Nobis, A. Nowak, R. Ochyra, I. Parnikoza, V. Ivanets, V. Plášek, M. Philippe, P. Saha, Md. N. Aziz, A. V. Shkurko, S. Ştefănuţ, G. M. Suárez, A. Uygur, K. Erkul, M. Wierzgoń & A. Graulich (2020): New national and regional bryophyte records, 63, Journal of Bryology, DOI: 10.1080/03736687.2020.1750930 To link to this article: https://doi.org/10.1080/03736687.2020.1750930 Published online: 18 May 2020. -
Bibliography of Publications 1974 – 2019
W. SZAFER INSTITUTE OF BOTANY POLISH ACADEMY OF SCIENCES Ryszard Ochyra BIBLIOGRAPHY OF PUBLICATIONS 1974 – 2019 KRAKÓW 2019 Ochyraea tatrensis Váňa Part I. Monographs, Books and Scientific Papers Part I. Monographs, Books and Scientific Papers 5 1974 001. Ochyra, R. (1974): Notatki florystyczne z południowo‑wschodniej części Kotliny Sandomierskiej [Floristic notes from southeastern part of Kotlina Sandomierska]. Zeszyty Naukowe Uniwersytetu Jagiellońskiego 360 Prace Botaniczne 2: 161–173 [in Polish with English summary]. 002. Karczmarz, K., J. Mickiewicz & R. Ochyra (1974): Musci Europaei Orientalis Exsiccati. Fasciculus III, Nr 101–150. 12 pp. Privately published, Lublini. 1975 003. Karczmarz, K., J. Mickiewicz & R. Ochyra (1975): Musci Europaei Orientalis Exsiccati. Fasciculus IV, Nr 151–200. 13 pp. Privately published, Lublini. 004. Karczmarz, K., K. Jędrzejko & R. Ochyra (1975): Musci Europaei Orientalis Exs‑ iccati. Fasciculus V, Nr 201–250. 13 pp. Privately published, Lublini. 005. Karczmarz, K., H. Mamczarz & R. Ochyra (1975): Hepaticae Europae Orientalis Exsiccatae. Fasciculus III, Nr 61–90. 8 pp. Privately published, Lublini. 1976 006. Ochyra, R. (1976): Materiały do brioflory południowej Polski [Materials to the bry‑ oflora of southern Poland]. Zeszyty Naukowe Uniwersytetu Jagiellońskiego 432 Prace Botaniczne 4: 107–125 [in Polish with English summary]. 007. Ochyra, R. (1976): Taxonomic position and geographical distribution of Isoptery‑ giopsis muelleriana (Schimp.) Iwats. Fragmenta Floristica et Geobotanica 22: 129–135 + 1 map as insertion [with Polish summary]. 008. Karczmarz, K., A. Łuczycka & R. Ochyra (1976): Materiały do flory ramienic środkowej i południowej Polski. 2 [A contribution to the flora of Charophyta of central and southern Poland. 2]. Acta Hydrobiologica 18: 193–200 [in Polish with English summary]. -
Molecular Phylogenetics and Evolution 62 (2012) 748–755
Molecular Phylogenetics and Evolution 62 (2012) 748–755 Contents lists available at SciVerse ScienceDirect Molecular Phylogenetics and Evolution journal homepage: www.elsevier.com/locate/ympev Morphology informed by phylogeny reveals unexpected patterns of species differentiation in the aquatic moss Rhynchostegium riparioides s.l. ⇑ Virginie Hutsemékers a, , Cristiana C. Vieira b, Rosa María Ros c, Sanna Huttunen d, Alain Vanderpoorten a a Université de Liège, Institut de Botanique, B22 Sart Tilman, B-4000 Liège 1, Belgium b Universidade do Porto, Departamento de Biologia, Edifício FC4, 4169-007 Porto, Portugal c Universidad de Murcia, Facultad de Biología, Departamento de Biología Vegetal, 30100 Murcia, Spain d University of Turku, Dept. of Biology, Laboratory of Genetics, 20014 Turku, Finland article info abstract Article history: Bryophyte floras typically exhibit extremely low levels of endemism. The interpretation, that this might Received 31 August 2011 reflect taxonomic shortcomings, is tested here for the Macaronesian flora, using the moss species com- Revised 8 November 2011 plex of Rhynchostegium riparioides as a model. The deep polyphyly of R. riparioides across its distribution Accepted 17 November 2011 range reveals active differentiation that better corresponds to geographic than morphological differences. Available online 25 November 2011 Morphometric analyses are, in fact, blurred by a size gradient that accounts for 80% of the variation observed among gametophytic traits. The lack of endemic diversification observed in R. riparioides in Keywords: Macaronesia weakens the idea that the low rates of endemism observed in the Macaronesian bryophyte Linnean shortfall flora might solely be explained by taxonomic shortcomings. To the reverse, the striking polyphyly of Moss Macaronesia North American and European lineages of R. -
A Note on Pottia Intermedia (Turner) Fürnr. (Pottiaceae, Bryopsida) with Special Reference to Its Phylogeny and New Localities in SW Japan
Hikobia 16: 67–78. 2011 A note on Pottia intermedia (Turner) Fürnr. (Pottiaceae, Bryopsida) with special reference to its phylogeny and new localities in SW Japan YUYA INOUE, HIROMI TSUBOTA, HARUMORI KUBO, SHINJI UCHIDA, SEIJI MUKAI, MASAKI SHIMAMURA AND HIRONORI DEGUCHI INOUE, Y., TSUBOTA, H., KUBO, H., UCHIDA, S., MUKAI, S., SHIMAMURA, M. & DEGUCHI, H. 2011. A note on Pottia intermedia (Turner) Fürnr. (Pottiaceae, Bryop- sida) with special reference to its phylogeny and new localities in SW Japan. Hikobia 16: 67–78. Eight new localities of Pottia intermedia (Turner) Fürnr. are recorded from Honshu and Shikoku (Hiroshima, Kagawa and Ehime Prefs.), SW Japan. Although it is widely distributed in the world, this species is a rare moss in Japan and is previously known from Honshu, Shikoku and Kyushu for Japan. Japanese populations of P. intermedia grow on soil in open sites, especially in citrus orchards. Analytical illustrations with SEM images of peristome, spores and leaf papillae and a discussion on the phyloge- netic position of this species are provided based on the materials collected. Yuya Inoue, Depertment of Biological Science, Faculty of Science, Hiroshima Univer- sity, 1–3–1 Kagamiyama, Higashi-hiroshima-shi, Hiroshima-ken 739–8526, Japan. Hiromi Tsubota, Harumori Kubo, Shinji Uchida & Seiji Mukai, Miyajima Natural Botanical Garden, Graduate School of Science, Hiroshima University, Mitsumaruko- yama 1156–2, Miyajima-cho, Hatsukaichi-shi, Hiroshima-ken 739–0543, Japan. Masaki Shimamura & Hironori Deguchi, Department of Biological Science, Graduate School of Science, Hiroshima University, Kagamiyama 1–3–1, Higashi-hiroshima-shi, Hiroshima-ken 739–8526, Japan. mum likelihood analysis. Introduction Pottia intermedia (Turner) Fürnr (Pottiaceae) Materials and methods is an acrocarpous moss, and despite its wide dis- tribution range in the world, it is a rare species For SEM observation and DNA data, fresh in Japan. -
Limbella Fryei (Williams) Ochyra Distinct from L
Journ. Hattori Bot. Lab. No. 63: 395-410 (Dec. 1987) LIMBELLA FRYEI (WILLIAMS) OCHYRA DISTINCT FROM L. TRICOSTATA (SULL.) CM. (MUSCI: AMBLYSTEGIACEAE) JOHN A. CHRISTyl ABSTRACT. Investigation of branching patterns, morphology, karyotype, isozymes and shoot growth confirmed specific differences between Limbella tricostata (Sull .) C. M. and L. /ryei (Williams) Ochyra. Significant differences were observed in branch bud frequency, leaf insertion angle, leaf areola tion, chromosome length, electrophoretic mobility of superoxide dismutase, and shoot regeneration. Chromosome numbers of both taxa are n = l1. A key and descriptions segregate the taxa. INTRODUCTION In Moss Flora of the Pacific Northwest, Lawton (1971) reduced the pleurocarpous North American moss Limbellafryei - then known as Sciaromiumfryei - to a synonym of the Hawaiian L. tricostata, because she could find no significant morphological dif ferences between plants from the two areas. Morphology of plants from the two regions is superficially similar, but closer inspection indicated to me that differences might exist in branching pattern and leaf insertion angle. The Hawaiian L. tricostata exhibits branching at more or less regular intervals up to I cm apart, giving the plants a pinnate or frondose habit, especially in aquatic forms (Fig. I). In contrast, branches of the North American L. fryei arise in more closely-spaced groups, giving the plants a penicillate, brush-like appearance. Plants are therefore nearly always dendroid (Fig. I). In both dried and living material, leaves of Hawaiian plants are appressed, whereas those of North American plants are erect to wide-spreading (Fig. 3). Also, habitat conditions for Limbella in Hawaii and Oregon are in most respects strikingly dissimilar (Christy 1980). -
Grimmiaceae Subfam. Racomitrioideae (Bryophyta) in Hungary
Polish Botanical Journal 61(1): 23–51, 2016 DOI: 10.1515/pbj-2016-0015 GRIMMIACEAE SUBFAM. RACOMITRIOIDEAE (BRYOPHYTA) IN HUNGARY Peter Erzberger, Halina Bednarek-Ochyra & Ryszard Ochyra Abstract. The subfamily Racomitrioideae of the Grimmiaceae is represented in Hungary by seven species belonging to four genera, including Bucklandiella affinis (F. Weber & D. Mohr) Bednarek-Ochyra & Ochyra, B. heterosticha (Hedw.) Bednarek- Ochyra & Ochyra, B. microcarpa (Hedw.) Bednarek-Ochyra & Ochyra, Codriophorus aciculare (Hedw.) P. Beauv., C. aquaticus (Brid.) Brid., Racomitrium lanuginosum (Hedw.) Brid. and Niphotrichum canescens (Hedw.) Bednarek-Ochyra & Ochyra. All species are briefly described and illustrated and their distribution in Hungary is mapped. A key for determination of genera and species is provided. Some ecological, bryogeographical and conservation questions related to particular species are discussed. The following new statuses and combinations are proposed: Codriophorus P. Beauv. sect. Hydrophilus (Bednarek-Ochyra) Bednarek- Ochyra & Ochyra, stat. et comb. nov., Codriophorus sect. Depressi (Bednarek-Ochyra) Bednarek-Ochyra & Ochyra, stat. et comb. nov., and Codriophorus sect. Andicola (Bednarek-Ochyra) Bednarek-Ochyra & Ochyra, stat. et comb. nov. Key words. Bucklandiella, Codriophorus, distribution, Niphotrichum, nomenclature, Racomitrium, taxonomy Peter Erzberger, Belziger Str. 37, D-10823 Berlin, Germany; e-mail: [email protected] Halina Bednarek-Ochyra & Ryszard Ochyra, Laboratory of Bryology, W. Szafer Institute of Botany, Polish Academy of Sciences, ul. Lubicz 46, 31-512 Kraków, Poland; e-mail: [email protected] and [email protected] Introduction This is the third and last paper in a series of publi- Although the Grimmiaceae exhibit remarkable cations dealing with the moss family Grimmiaceae variation and diversity of gametophyte and sporo- in Hungary (Erzberger & Schröder 2008; Erzberger phyte characters, the family as a whole is a dis- 2009a). -
COLOMBIANA De Ciencias Exactas, Físicas Y Naturales
ISSN 0370-3908 eISSN 2382-4980 REVISTA DE LA ACADEMIA COLOMBIANA de Ciencias Exactas, Físicas y Naturales Vol. 42 • Número 164 • Págs. 161-300 • Julio-Septiembre de 2018 • Bogotá - Colombia ISSN 0370-3908 eISSN 2382-4980 Academia Colombiana de Ciencias Exactas, Físicas y Naturales Vol. 42 • Número 164 • Págs. 161-300 • Julio-Septiembre de 2018 • Bogotá - Colombia Comité editorial Editora Elizabeth Castañeda, Ph. D. Instituto Nacional de Salud, Bogotá, Colombia Editores asociados Ciencias Biomédicas Fernando Marmolejo-Ramos, Ph. D. Universidad de Adelaide, Adelaide, Australia Luis Fernando García, M.D., M.Sc. Universidad de Antioquia, Medellin, Colombia Ciencias Físicas Gustavo Adolfo Vallejo, Ph. D. Pedro Fernández de Córdoba, Ph. D. Universidad del Tolima, Ibagué, Colombia Universidad Politécnica de Valencia, España Luis Caraballo, Ph. D. Diógenes Campos Romero, Dr. rer. nat. Universidad de Cartagena, Cartagena, Colombia Universidad Nacional de Colombia, Juanita Ángel, Ph. D. Bogotá, Colombia Pontificia Universidad Javeriana, Román Eduardo Castañeda, Dr. rer. nat. Bogotá, Colombia Universidad Nacional, Medellín, Colombia Manuel Franco, Ph. D. María Elena Gómez, Doctor Pontificia Universidad Javeriana, Universidad del Valle, Cali Bogotá, Colombia Alberto Gómez, Ph. D. Gabriel Téllez, Ph. D. Pontificia Universidad Javeriana, Universidad de los Andes, Bogotá, Colombia Bogotá, Colombia Jairo Roa-Rojas, Ph. D. John Mario González, Ph. D. Universidad Nacional de Colombia, Universidad de los Andes, Bogotá, Colombia Bogotá, Colombia Gloria Patricia Cardona Gómez, B.Sc., Ph. D. Ángela Stella Camacho Beltrán, Dr. rer. nat. Universidad de Antioquia, Medellin, Colombia Universidad de los Andes, Bogotá, Colombia Ciencias del Comportamiento Edgar González, Ph. D. Guillermo Páramo, M.Sc. Pontificia Universidad Javeriana, Universidad Central, Bogotá, Colombia Bogotá, Colombia Rubén Ardila, Ph. -
Why Are There So Many Flowering Plants? a Multiscale Analysis of Plant Diversification
vol. 195, no. 6 the american naturalist june 2020 Why Are There So Many Flowering Plants? A Multiscale Analysis of Plant Diversification Tania Hernández-Hernández1,2 and John J. Wiens1,* 1. Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, Arizona 85721; 2. Catedrática CONACYT (Consejo Nacional de Ciencia y Tecnología) asignada a LANGEBIO-UGA (Laboratorio Nacional de Genómica para la Biodiversidad–Unidad de Genómica Avanzada) Cinvestav, Libramiento Norte Carretera León Km 9.6, 36821 Irapuato, Guanajuato, Mexico Submitted February 3, 2019; Accepted November 25, 2019; Electronically published April 3, 2020 Online enhancements: appendixes A–R. Dryad data: https://doi.org/10.5061/dryad.5tb2rbp10. abstract: The causes of the rapid diversification and extraordi- cies distributed among 10 major clades (phyla sensu Niklas nary richness of flowering plants (angiosperms) relative to other 2016). The differences in richness among these clades are plant clades is a long-standing mystery. Angiosperms are only one striking (fig. 1), with ∼90% of described land plant species be- among 10 major land plant clades (phyla) but include ∼90% of land longing to angiosperms (flowering plants; Magnoliophyta). plant species. However, most studies that have tried to identify which Given that angiosperms also appear to be relatively young, traits might explain the remarkable diversification of angiosperms they clearly have a high overall diversification rate (speciation have focused only on richness patterns within angiosperms and tested minus extinction; Morlon 2014). The challenge is to identify only one or a few traits at a single hierarchical scale. Here, we assem- fi ble a database of 31 diverse traits among 678 families and analyze which traits might help explain this accelerated diversi ca- relationships between traits and diversification rates across all land tion, including traits related to ecology, morphology, phys- plants at three hierarchical levels (phylum, order, and family) using iology, reproduction, and genomic characteristics. -
Article ISSN 2381-9685 (Online Edition)
Bry. Div. Evo. 39 (1): 075–093 ISSN 2381-9677 (print edition) DIVERSITY & http://www.mapress.com/j/bde BRYOPHYTE EVOLUTION Copyright © 2017 Magnolia Press Article ISSN 2381-9685 (online edition) https://doi.org/10.11646/bde.39.1.12 Diversity of the rheophytic condition in bryophytes: field observations from multiple continents JAMES R. SHEVOCK1, WEN-ZHANG MA2 & HIROYUKI AKIYAMA3 1Department of Botany, California Academy of Sciences, 55 Music Concourse Dr., Golden Gate Park, San Francisco, California 94118, U.S.A. 2Herbarium, Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sci- ences, Kunming, Yunnan 650201, China 3Museum of Nature & Human Activities, Hyogo, Institute of Natural and Environmental Sciences, University of Hyogo, Yayoigaoka-6, Sandi-shi, Hyogo 669-1546, Japan Abstract Bryophytes occurring in riparian systems where they are seasonally submerged or inundated are poorly documented in many parts of the world. The actual number of rheophytic bryophytes remains speculative but we believe the number could easily exceed 500 taxa. Rheophytic bryophytes generally display highly disjunct populations and adjacent rivers and streams can have considerably different species composition. Water management in the form of flood control, dams, and hydroelectric development can adversely impact many rheophytic bryophyte species and communities due to changes in river ecology, timing of water flow, and water temperature. Specimens of rheophytic bryophytes are underrepresented in herbaria and la- bels rarely indicate the actual micro-habitat and ecological attributes for bryophytes collected within riparian systems. Many rheophytes are morphological anomalies compared to their terrestrial relatives and the evolution of the rheophytic condition has occurred repeatedly in many bryophyte lineages.