TY - JOUR A1 - Koponen, Timo T1 - Taxonomic results of the Bryotrop expedition to Zaire and Rwanda : 21. Mniaceae T2 - Tropical bryology N2 - The specimen represents a rather typical African form of this taxon. The marginal teeth of the leaf are small and the leaf cells near isodiametric, but on the basis of the clearly differentiated juxtacostal cells, the specimen belongs to var. rhynchophyrum. Two other tropical African species are Plagiomnium cuspidatum (Hedw.) T. Kop. and P. undulatum (Hedw.) T. Kop. which differ by having an acute or cuspidate leaf apex, which in P. rhynchophorum tends to be emarginate and apiculate, and having sharper and larger projecting marginal teeth on their leaves. The distribution of P. rhynchophyrum is mapped and African specimens listed in Koponen (1981). Y1 - 1993 UR - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/30261 UR - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-302619 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 - 8 SP - 189 EP - 189 PB - D. Quandt, Univ. Bonn, Nees Inst. für Biodiversität d. Pflanzen CY - Bonn ER -