TY  - JOUR
A1  - Florschütz-de Waard, J.
T1  - A revision of the genus Potamium (Musci: Sematophyllaceae).
T2  - Tropical bryology
N2  - 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.
Y1  - 1992
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/30203
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-302035
SN  - 0935-5626
N1  - The layout of the electronic version of this contribution differs from the layout of the original version published in the printed volume.
IS  - 5
SP  - 109
EP  - 121
PB  - D. Quandt, Univ. Bonn, Nees Inst. für Biodiversität d. Pflanzen
CY  - Bonn
ER  -