Ignatova E.A.1, Tan B.C.2,3, Afonina O.M.4, Ignatov M.S.5 2009. Sematophyllum (Sematophyllaceae, Bryophyta), a new genus and family for Russia // Arctoa. Vol. 18: 213–216 [in English].

1 Biological Faculty, Moscow State University, Moscow 119234 Russia; e-mail: arctoa@list.ru

2 Singapore Botanic Gardens, 1 Cluny Road, 259569 Singapore; e-mail: benctan@berkeley.edu

3 Department of Biological Science, National University of Singapore, Science Drive 4, Singapore, 119260

4 Komarov Botanical Institute of Russian Academy of Sciences, Prof. Popov str., 2, St. Petersburg, 197376 Russia; e-mail: stereodon@yandex.ru

5 Tsitsin Main Botanical Garden of Russian Academy of Sciences, Botanicheskaya 4, Moscow 127276 Russia; e-mail: misha_ignatov@list.ru

KEYWORDS: Sematophyllum, Sematophyllaceae, Bryophyta, disjunction, phytogeography.

ABSTRACT. Sematophyllum substrumulosum (Hampe) E. Britton found as a new species record for Russia in Zabaikalsky Territory in Eastern Siberia, ca. 8 000 km from its nearest localities in Southern Europe. This is the first record of the genus, as well as the family Sematophyllaceae, s. str. (excluding Pylaisiadelphaceae) from Russia. Interestingly, this species known in the Mediterranean region in temperate climate is found in Russia in mountain tundra in extremely cold environment. Description, illustrations and phytogeographical considerations are given.

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doi 10.15298/arctoa.18.15