Otnyukova T.N.1 2002. A study of the Didymodon species (Pottiaceae, Musci) in Russia. I. Species with caducous leaf apices // Arctoa. Vol. 11: 337–350 [in English].

1 Sukachev’s Institute for Forest Research, Siberian Branch of Russian Academy of Sciences, Akademgorodok, Krasnoyarsk 660036 Russia

KEYWORDS: Didymodon, Didymodon hedysariformis, Russia, taxonomy, new species, vegetative propagation, Pottiaceae.

ABSTRACT. Six species of the genus Didymodon with caducous leaf apices are reported from Russia (Siberia) based on collections from KRF, IRK, MHA, LE. The specimens previously identified as D. rigidulus s.lat. and D. johansenii (Williams) Crum are found to represent also D. anserinocapitatus (X.-j. Li) Zand., D. hedysariformis T. Otn., D. gaochienii B.C. Tan & Y. Jia, and a new species Didymodon murrayeae, T. Otn. sp. nov. Diagnostic characters and illustrations are provided for the taxa. For D. hedysariformis and D. johansenii sporophytes are found, for D. gaochienii and D.murrayae perichaetia are also indicated.

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