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

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 distri...

Full description

Bibliographic Details
Published in:The Lichenologist
Main Author: Lewis-Smith, Ronald I.
Format: Article in Journal/Newspaper
Language:English
Published: Cambridge University Press (CUP) 2005
Subjects:
Ecology, Evolution, Behavior and Systematics
Antarctic
The Antarctic
Deception Island
South Orkney Islands
Signy Island
Antarc*
Online Access:http://dx.doi.org/10.1017/s0024282905015252
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0024282905015252
Description
Summary: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.

Similar Items