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The chemistry of Pseudocyphellaria impressa S. Lat. in New Zealand
Abstract
As part of a detailed study of the nomenclature and taxonomy of the New Zealand
species of Pseudocyphellaria it has been noted that the chemistry of the P. impressa
(Hook & Taylor) Vainio aggregate, that is species with a markedly faveolate (honeycomb-
like) upper surface and a green algal phycobiont, is particularly complex.
The 45 lichen substances detected fall into four distinct groupings, here designated
as 'Codings'. The aim of this contribution is to investigate suitable methods for
revealing this chemical assemblage by t.l.c. and, as far as is currently possible, to
identify the range of substances. No conscious attempt is made to assign the four
chemical Codings to particular taxa or species groupings; the taxonomy of the
group will be discussed elsewhere. The four Codings proved to be remarkably
uniform and constant considering the range and number of substances involved;
such variation that occurred was only in the presence and concentration of accessory
substances.
Although this work only concerns New Zealand material, similar patterns occur
in related taxa of the group present in southern South America, south-east Australia
and Tasmania.
Type
Journal Article
Type of thesis
Series
Citation
Wilkins, A. L., & James, P. W. (1979). The chemistry of Pseudocyphellaria impressa S. Lat. in New Zealand. The Lichenologist, 11(03), 271-281.
Date
1979
Publisher
Degree
Supervisors
Rights
This article is published in the journal, The Lichenologist. Copyright © British Lichen Society 1979.