. Bulletin of the British Museum (Natural History). Botany; Botany. P ARM ELI A (AMPHIGYMNIA) IN EAST AFRICA 191 East African records Kenya. Rift Valley Province, Nakuru District, Nakuru, Agricultural Show Ground, c. 1900 m, on a cultivated Jacaranda mimo si folia, Santesson 21663 b (UPS); Nakuru, on trunk of Jacaranda, Gilenstam 2004 (UPS, O—type collection). 30. Parmelia kwalensis Krog & Swinscow sp. nov. Fig. 15 Thallus cofticola, adnatus, virido-griseus. Lobi ad 1 cm lati, orbiculares, profunde divisi, crenati, ciliis 0*5-2 mm longis, superne maculati. Isidia ad laminam, ad centrum tha
. Bulletin of the British Museum (Natural History). Botany; Botany. P ARM ELI A (AMPHIGYMNIA) IN EAST AFRICA 191 East African records Kenya. Rift Valley Province, Nakuru District, Nakuru, Agricultural Show Ground, c. 1900 m, on a cultivated Jacaranda mimo si folia, Santesson 21663 b (UPS); Nakuru, on trunk of Jacaranda, Gilenstam 2004 (UPS, O—type collection). 30. Parmelia kwalensis Krog & Swinscow sp. nov. Fig. 15 Thallus cofticola, adnatus, virido-griseus. Lobi ad 1 cm lati, orbiculares, profunde divisi, crenati, ciliis 0*5-2 mm longis, superne maculati. Isidia ad laminam, ad centrum thalli aggregata. Apothecia et pycnidia ignota. Acidum norsticticum, acidum sticticum, acidum consticticum, et atranorinum continens. Thallus corticolous, adnate, green-grey. Lobes up to 1 cm broad, rounded, deeply divided, crenate, ciliate, cilia 0*5-2 mm long. Upper side distinctly maculate. Medulla white. Underside dark brown, with a narrow, pale brown, naked marginal zone, rhizines relatively long, slender, scattered almost to the margins. Soralia absent. Isidia laminal, crowded towards the centre of the thallus, cylindrical, simple or coralloid, some bearing cilia. Apothecia and pycnidia unknown. TLC: norstictic acid, stictic acid, constictic acid, atranorin. Type: Kenya. Coast Province, Kwale District, 2 km N of Gazi, 4° 22' S, 39° 30' E, in mangrove, February 1972, coll. H. Krog & T. D. V. Swinscow no. K 44/103 (O—holotype, BM—isotype). Parmelia kwalensis is considered to be the isidiate counterpart of the primary species P. aldabrensis, which grows in the same locality. The species recalls P. crinita in being isidiate and ciliate and producing stictic acid, but differs in the strongly maculate upper cortex, brown underside, and presence of norstictic acid. Furthermore, the two species have different ecological requirements, since P. crinita is a species of montane forests and inselbergs. Parmelia subtinctoria, which has a maculate upper cortex and a brown under
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