. Bulletin of the British Museum (Natural History). Botany; Botany. PARMELIA (AMPHIGYMNIA) IN EAST AFRICA 189 naked marginal zone, rhizines sparse. Soralia and isidia absent. Apothecia submarginal, stipitate, thalline exciple and stipe strongly maculate, thalline margin dentate-ciliate, disc up to 1 cm in diameter, imperforate, spores 25-28 x 17-20//m, thick-walled. Conidia sub- lageniform, 7-9 jum long. TLC: the lividic acid complex, atranorin. The description is based on the Ugandan material. The specimens from West Africa were better developed, with broader lobes and longer cilia. Parmelia
. Bulletin of the British Museum (Natural History). Botany; Botany. PARMELIA (AMPHIGYMNIA) IN EAST AFRICA 189 naked marginal zone, rhizines sparse. Soralia and isidia absent. Apothecia submarginal, stipitate, thalline exciple and stipe strongly maculate, thalline margin dentate-ciliate, disc up to 1 cm in diameter, imperforate, spores 25-28 x 17-20//m, thick-walled. Conidia sub- lageniform, 7-9 jum long. TLC: the lividic acid complex, atranorin. The description is based on the Ugandan material. The specimens from West Africa were better developed, with broader lobes and longer cilia. Parmelia inexpectata is similar to P. amaniensis in most important morphological characters, and the two species differ mainly chemically. However, we consider the complexity of the lividic acid group of substances to warrant the acceptance of the chemical content as a species specific character in this case. For further discussion, see under 'Circumscription of the species'. The species is not known outside Africa. In East Africa it is represented only by the type collection of P. paradoxa cited Fig. 14 Parmelia jacarandicola Krog & Swinscow, holotype (UPS). Rule = 1 Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original British Museum (Natural History). London : The Museum
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