Ignatov M.S.1, Ando H.2, Ignatova E.A.3 1996. Bryophyte flora of Altai Mountains. VII. Hypnaceae and related pleurocarps with bi- or ecostate leaves // Arctoa. Vol.6: 21–112 [in English].

1 Tsitsin Main Botanical Garden of Russian Academy of Sciences, Botanicheskaya 4, Moscow 127276 Russia

2 Department of Biological Science, Faculty of Science, Hiroshima University, Kagami-yama, Higashi-hiroshima, Hiroshim-ken 739, Japan

3 Biological Faculty, Moscow State University, Moscow 119234 Russia

KEYWORDS: Hypnaceae, Plagiotheciaceae, Entodontaceae,Hylocomiaceae, Sematophyllaceae, taxonomy, mosses, phytogeography, Altai, Russia, key for identification.

ABSTRACT. The family Hypnaceae in Altai includes the genera Callicladium (1 species), Eurohypnum (1), Gollania (1), Heterophyllium (1), Homomallium (2), Hypnum (11), Podperaea (1), Ptilium (1), Pylaisiella (2), Taxiphyllum (1); family Plagiotheciaceae - Herzogiella (1), Isopterygiopsis (3), Myurella (3), Orthothecium (3), Plagiothecium (4), Platydictya (1); family Entodontaceae - Entodon (3), Platygyrium (1); family Hylocomiaceae - Hylocomiastrum (2), Hylocomium (1), Pleurozium (1), Rhytidiadelphus (2); family Sematophyllaceae - Struckia (1). Descriptions and illustrations are given for all species. Homomallium connexum and Hypnum fauriei are reported in South Siberia for the first time. Some evidence for placement of Platygyrium in the Entodontaceae is provided.

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