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Polycauliona comandorica, a new fruticulose species in the family Teloschistaceae from the Commander Islands, Russia

Published online by Cambridge University Press:  30 July 2021

Ivan V. Frolov*
Affiliation:
Institute Botanic Garden, Ural Branch of the Russian Academy of Sciences (RAS), Vosmogo Marta Street 202a, 620144 Yekaterinburg, Russia Sakhalin Branch of Botanical Garden-Institute FEB RAS, 693023 Yuzhno-Sakhalinsk, Russia
Dmitry E. Himelbrant
Affiliation:
Department of Botany, St Petersburg State University, Universitetskaya emb. 7–9, 199034 St Petersburg, Russia Laboratory of Lichenology and Bryology, Komarov Botanical Institute RAS, Professor Popov Street 2, 197376 St Petersburg, Russia
Irina S. Stepanchikova
Affiliation:
Department of Botany, St Petersburg State University, Universitetskaya emb. 7–9, 199034 St Petersburg, Russia Laboratory of Lichenology and Bryology, Komarov Botanical Institute RAS, Professor Popov Street 2, 197376 St Petersburg, Russia
Ilya A. Prokopiev
Affiliation:
Laboratory of Ecological, Medical Biochemistry and Biotechnology, Institute for Biological Problems of Cryolithozone SB RAS, Lenin Street 41, 677980 Yakutsk, Russia Laboratory of Analytical Photochemistry, Komarov Botanical Institute RAS, Professor Popov Street 2, 197376 St Petersburg, Russia
*
Author for correspondence: Ivan V. Frolov. E-mail: ivfrolov@gmail.com

Abstract

A new fruticulose species, Polycauliona comandorica, is described from the supralittoral zone of the Commander Islands in the Russian Far East. This growth form is very rare in the family Teloschistaceae where the new species belongs. It is the only fruticulose species of the family that forms vegetative propagules (soredia and blastidia). Polycauliona comandorica is similar to the North American P. thamnodes but differs in having a lighter yellow to grey thallus, longer and thicker branches with a rough surface, soredia and blastidia, and in lacking apothecia. Two fruticulose-lobate pairs of species in Polycauliona are briefly discussed: P. comandorica-P. verruculifera and P. thamnodes-P. brattiae.

Type
Standard Papers
Copyright
Copyright © The Author(s), 2021. Published by Cambridge University Press on behalf of the British Lichen Society

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Polycauliona comandorica, a new fruticulose species in the family Teloschistaceae from the Commander Islands, Russia
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