. Bulletin of the British Museum (Natural History). Botany; Botany. 218 H. KROG & T. D. V. SWINSCOW. Fig. 25 Parmelia taitae Krog & Swinscow, holotype (O). Rule = 1 cm. Type: Kenya, Coast Province, Taita District, Taita Hills, Mt Iyale, 3° 23' S, 38° 20' E, alt. 1980 m, epilithic on granitic rock, 9 December 1973, coll. /. Nordal no. INB 727 (O— holotype). Parmelia eborina Hale, described from Central America, has similar spores and conidia but lacks cilia, has subsessile apothecia, and produces protocetraric acid without the addition of fumarprotocetraric acid. It is possible that P.
. Bulletin of the British Museum (Natural History). Botany; Botany. 218 H. KROG & T. D. V. SWINSCOW. Fig. 25 Parmelia taitae Krog & Swinscow, holotype (O). Rule = 1 cm. Type: Kenya, Coast Province, Taita District, Taita Hills, Mt Iyale, 3° 23' S, 38° 20' E, alt. 1980 m, epilithic on granitic rock, 9 December 1973, coll. /. Nordal no. INB 727 (O— holotype). Parmelia eborina Hale, described from Central America, has similar spores and conidia but lacks cilia, has subsessile apothecia, and produces protocetraric acid without the addition of fumarprotocetraric acid. It is possible that P. taitae represents the parent morph of P. pseudo gray ana, a sorediate species which occurs in the same general area. They agree in most important characters, but P. pseudograyana is a somewhat smaller species with lobes rarely exceeding 1 cm in width. Parmelia taitae is known only from the type collection and an additional collection, Nordal INB 728, from a nearby locality at 2050 m altitude. 63. Parmelia tinctorum Despr. ex Nyl. Flora, Jena 55 : 547 (\S72).—Parmotrema tinctorum (Despr. ex Nyl.) Hale, Phytologia 28 : 339 (1974). Type: Canary Islands, Despreaux (?) (H-NYL 35365—holotype). [TLC: not tested.] Parmelia pseudotinctorum des Abb., Bull. Inst. fr. Afr. noire A, 13:973 (1951).—Parmotrema pseudotinctorum (des Abb.) Hale, Phytologia 28 : 338 (1974). Type: Mt Tonkoui, cercle de Man, Ivory Coast, 14 August 1948, des Abbayes (US—isotype). [TLC: lecanoric acid, atranorin.] Thallus corticolous or more rarely saxicolous, membranaceous to coriaceous, loosely attached, pale grey to grey-green. Lobes 1-2 cm broad, rounded, entire or crenate, eciliate. Upper side emaculate, shiny, becoming dull towards the centre, cortex sometimes cracking and flaking. Medulla white. Underside black, with a broad, brown, naked marginal zone, rhizines fairly coarse, in scattered groups. Isidia sparse to abundant, laminal, confluent or in scattered groups, brown tipped or concolorous with
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