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Aptroot, A./ Cáceres, M. E. S. 2016: Two new lecanoroid Caloplaca (Teloschistaceae) species from gneiss inselbergs in equatorial Brazil, with a key to tropical lecanoroid species of Caloplaca s. lat.. - The Lichenologist 48(3): 201-207. [RLL List # 243 / Rec.# 37652]
Keywords: Caatinga/ Ceará/ lichens/ saxicolous/ Teloschistales
Abstract: Gneiss inselbergs in the Caatinga region of Ceará in equatorial Brazil are literally covered with a wide diversity of caloplacoid lichens. This includes two closely related new saxicolous species of Caloplaca, both with the aspect of a Lecanora of the subfusca-aggregate: C. lecanorocarpa has a grey areolate bullate thallus with atranorin on a black prothallus, grey thalline apothecium margin, sessile apothecia with glossy dark brown disc, and ascospores of 10–12×5·0–5·5 μm, with a 5·0–5·5 μm thick septum; and the similar, related C. lecapustulata which mainly differs by the rimose thallus with irregular mushroom-shaped pustules. The phylogenetic position of the two new species has been assessed to be within the Caloplacoideae. A key to all tropical lecanoroid Caloplaca species is provided.
Countries/Continents: Brazil/South America
Notes: New (both from Brazil): Caloplaca lecanorocarpa Aptroot & M. Cáceres, Caloplaca lecapustulata Aptroot & M. Cáceres.
URL: http://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=10299884&fulltextType=RA&fileId=S0024282916000049
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