P. K. Divakar, G. Amo de Paz, R. del Prado, T. L. Esslinger and A. Crespo 2007: Upper cortex anatomy corroborates phylogenetic hypothesis in species of Physconia (Ascomycota, Lecanoromycetes). - Mycological Research111(11): 1311-1320. [RLL List # 210 / Rec.# 29947] Keywords: PHYSCONIA/ LECANOROMYCETES/ CORTICAL ANATOMY/ ITS NUCLEAR RIBOSOMAL DNA/ NEW TAXA/ NORTH AFRICA/ SPAIN/ MEDITERRANEAN REGION
Abstract: [ITS data and morphological analyses applied to the P. distorta-P. americana group. "Our study confirmed that the upper cortex of P. distorta is prosoplectenchymatous ... and that American specimens of P. americana have a typical paraplectenchymatous upper cortex. The results confirmed the evolutionary pattern and taxonomic assessment of the anatomy of the upper cortex in the genus Physconia and revealed a common undescribed species ... that can be added to the North African and Southern Euro-Asiatic lichen flora." New: Physconia thorstenii A. Crespo & Divakar sp. nov.]