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Notes on the Maritime, Lignicolous Lichen Lecanora Orae-Frigidae

Published online by Cambridge University Press:  28 March 2007

I. M. Brodo  and
H. Vánská
I. M. Brodo
Affiliation:
National Museums of Canada, Museum of Natural Sciences, Ottawa, Ontario K1A 0M8, Canada.
H. Vánská
Affiliation:
Department of Botany, University of Helsinki, Unioninkatu 44, SF-00170 Helsinki 17, Finland.
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Abstract

Lecanora symmicta var. sorediosa Westman, a soraliate, yellow, crutose lichen frequently found on wood substrata along the sea shores in the arctic and boreal regions of the northern hemisphere, is now generally accepted as a distinct species, and has recently been provided with a new name: Lecanora arae-frigidae R. Sant. Besides usnic acid it contains zeorin, thiophanic acid and two accessory xanthones. The Finnish material of L. symmicta (Ach.) Ach. examined for comparison differs having thiophanic acid inconstant as well as three unknown substances, while lacking one of the xanthones. One specimen of L. orae-frigidae from the White Sea coast in Karelian A. S. S. R. was growing with a small thallus of Lecanora grantii Magnusson, a new record of the latter species for Europe.

Type
Research Article
Information
The Lichenologist , Volume 16 , Issue 1 , February 1984 , pp. 45 - 51
Copyright
Copyright © British Lichen Society 1984

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