hepatiCs RaRe and thReatened in euRope

The distribution in the Russian part of the Caucasus of 14 hepatic species rare and threatened in Europe is discussed and mapped based on literature records and specimens collected by the authors. Solenostoma caucasicum (Vaňa) Konstant. is recorded as new for the Russian part of the Caucasus. New localities for Clevea spathysii (Lindenb.) Mull. Frib., Frullania parvis- tipula Steph., Frullania bolanderi Austin, Scapania carinthiaca J. B. Jack ex Lindb., S. verrucosa Heeg. and Lophozia ascendens (Warnst.) R. M. Schust. are reported. Their ecology, phytogeography and mode of dispersal in the Caucasus are discussed.