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Extensive colonization of volcanic ash by an unusual form of Peltigera didactyla at Deception Island, maritime Antarctic

Published online by Cambridge University Press:  12 July 2005

Ronald I. Lewis-Smith
Ronald I. Lewis-Smith
Affiliation:
British Antarctic Survey, Madingley Road, Cambridge CB3 0ET, UK
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Extract

Peltigera didactyla (With.) J. R. Laundon has a cosmopolitan distribution, but in the Antarctic it is very restricted and is nowhere common or abundant, occurring at a number of sites in the northern maritime Antarctic extending to 65°S (Øvstedal & Lewis-Smith, 2001). Within its Antarctic distribution it appears to be most frequent on Signy Island, South Orkney Islands. Typically, this species grows as small colonies amongst mosses in relatively dry, gravelly, sheltered habitats, forming aggregations of lobed sorediate thalli up to c. 10–15 (rarely to c. 25) cm diameter.

Type
Short Communications
Information
The Lichenologist , Volume 37 , Issue 4 , July 2005 , pp. 367 - 368
Copyright
© British Lichen Society 2005

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