Ignatov M.S.1, Milyutina I.A.2 2007. A revision of the genus Sciuro-hypnum (Brachytheciaceae, Bryophyta) in Russia // Arctoa. Vol. 16: 63–86 [in English].

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

2 Belozersky Institute of Physico-Chemical Biology, Moscow State University, Moscow 119234 Russia; e-mail: iramilyutina@yandex.ru

KEYWORDS: Sciuro-hypnum, taxonomy, Russia, nomenclature, phytogeography, molecular phylogeny, nrITS

ABSTRACT. There are thirteen species of genus Sciuro-hypnum in the Russian bryoflora: S. altaicum, S. brotheri, S. curtum, S. flotowianum, S. glaciale, S. latifolium, S. oedipodium, S. ornellanum, S. plumosum, S. populeum, S. reflexum, S. starkei, and S. uncinifolium. Hypnum jeniseense is synonymized with Sciuro-hypnum reflexum. Morphological descriptions and distribution of taxa are given. Analysis of nuclear ITS1-2 data demonstrates the distinct segregation of three groups within the genus: (1) S. brotheri, S. flotowianum, S. plumosum, S. populeum, S. uncinifolium; (2) S. curtum; and, (3) S. latifolium, S. oedipodium, S. ornellanum, S. glaciale, S. reflexum, S. starkei. In the last group, the variability is very low and species differ from each other by just one substitution in nrITS, or are totally identical in this spacer.

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