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Phytogeographical and ecological relations of epiphytic lichens from Lewis and Harris with notes on other cryptogamic epiphytes

Published online by Cambridge University Press:  05 December 2011

Harald Riedl
Harald Riedl
Affiliation:
Natural History Museum, Vienna
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Synopsis

Fifty-eight epiphytic lichen species are listed from Lewis and Harris, and their geographical connections are discussed. Twenty-nine of them were collected on this island for the first time. Judging from the occurrence of Lecanactis homalotropa, Pyrenula laevigata and Ramalina obtusata (which are confined to very few places in the British Isles today and may be regarded as relics) on a small number of old and mostly dying sycamores near Rodel at the southern end of Harris, there had been an older forest of which these trees form the last remnants and from which the colonization of Stornoway Woods may have originated. Some of the lichens also occur on dwarf-shrubs which have certainly been present all the time, or on rocks or ground. Man may have played a part in introducing lichen-species along with timber. A few notes on epiphytic algae, fungi, mosses and ferns are added.

Type
Research Article
Information
Proceedings of the Royal Society of Edinburgh, Section B: Biological Sciences , Volume 77: The Natural Environment of the Outer Hebrides , 1979 , pp. 295 - 304
Copyright
Copyright © Royal Society of Edinburgh 1979

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