Contribution to the liverwort flora of the Russian Arctic: Champ, Heiss, Vize, Troynoy and Vaygach islands
Identification of a small collection of liverworts made by Irina Yu. Kirtsideli in June - August 2011 in previously not accessible for botanists Champ Island (Franz Josef Land Archipelago), Troynoy Island (Islands of Izvestiy TsIK) and poorly bryologically explored Heiss (Franz Josef Land Archipelago), Vize and Vaygach islands and by Irina N. Safronova from Vize Island resulted in a list of 19 liverwort species and 4 infraspecific taxa. Most of them are new records for these islands. Remarkable records are Mesoptychia badensis var. apiculata, Leiocolea heterocolpos var. arctica from Troynoy Island, Gymnocolea inflata from Heiss Island, Scapania cuspiduligera from Vaygach Island and S. zemliae from Champ Island. A new combination is published for Mesoptychia badensis var. apiculata (R.M. Schust.) Potemkin.