A revision of the genus Potamium (Musci: Sematophyllaceae).

The neotropical genus Potamium as described by Mitten (1869) included species that had little more in common than a growth form adapted to a semi-aquatic habitat. Brotherus divided the genus in section Eu-Potamium and se
The neotropical genus Potamium as described by Mitten (1869) included species that had little more in common than a growth form adapted to a semi-aquatic habitat. Brotherus divided the genus in section Eu-Potamium and section Potamiopsis, based on peristome characters. This study shows that all species of section Eu-Potamium belong to Sematophyllum, including P. lonchophyllum which was designated as lectotype of Potamium by Buck (1990). In section Potamiopsis two species are recognized: P. vulpinum (Mont.) Mitt. (syn. nov.: Sematophyllum maguireorum Buck) and P. deceptivum Mitt. (syn. nov.: P. leucodontaceum (C.Müll.) Broth., Meiothecium negrense Mitt. and Maguireella vulpina (Mont.) Buck). The genus Potamium is characterized by capsules with an endostome consisting of a low basal membrane and filiform segments, which are often reduced in P. deceptivum. P. vulpinum is designated as lectotype of Potamium and the lectotypification of Buck is rejected. Descriptions, illustrations and a key are provided to the species of Potamium and allied semiaquatic taxa of Sematophyllum. 
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Metadaten
Author:J. Florschütz-de Waard
URN:urn:nbn:de:hebis:30:3-302035
ISSN:0935-5626
Parent Title (English):Tropical bryology
Publisher:D. Quandt, Univ. Bonn, Nees Inst. für Biodiversität d. Pflanzen
Place of publication:Bonn
Document Type:Article
Language:English
Year of Completion:1992
Year of first Publication:1992
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2013/07/11
Issue:5
Pagenumber:13
First Page:109
Last Page:121
Note:
The layout of the electronic version of this contribution differs from the layout of the original version published in the printed volume. 
HeBIS PPN:348826540
Dewey Decimal Classification:580 Pflanzen (Botanik)
Sammlungen:Sondersammelgebiets-Volltexte
Zeitschriften / Jahresberichte:Tropical Bryology, Volume 5 (1992)
Journal: Dazugehörige Zeitschrift anzeigen
Licence (German):License Logo Veröffentlichungsvertrag für Publikationen

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