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

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 veget...

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Bibliographic Details
Published in:The Lichenologist (London) 2021-07, Vol.53 (4), p.299-306
Main Authors: Frolov, Ivan V., Himelbrant, Dmitry E., Stepanchikova, Irina S., Prokopiev, Ilya A.
Format: Article
Language:English
Subjects:
Apothecia
Chromatography
Datasets
Islands
Morphology
New species
Phylogenetics
Propagules
Standard Papers
Supralittoral zone
Teloschistaceae
Thallus
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Summary: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.
ISSN:0024-2829
1096-1135
DOI:10.1017/S0024282921000268