Phaeographis flavescens, A New Record of the Lichen Genus Phaeographis in China

Abstract:

Based on the methods of morphology, anatomy, chemistry and molecular, Phaeographis flavescens Dal-Forno & Eliasaro (Graphidaceae) is recorded as new to China. It is characterized by crustose thallus, surface pale yellowish green, dull, smooth; ascomata flexuose, branched, immersed in pseudostromata; the lirellae have a narrow, brown-black edge, with small lateral cracks; disc flat, black, with white pruina; hymenium colorless, paraphyses with branched tips; ascospores 8 per ascus, brown, with transverse septa, (4-)6 locular, 19-25.5 μm×6-7 μm, I+ wine-red. The species is found in Yunnan and Fujian provinces, and the study enriches our understanding of the Phaeographis composition and distribution in China.

Key words:Ostropales;Graphidaceae;Lichenized fungi;Taxonomy