Hue 1909: Quatuor lichenum exoticorum genera elaboravit. - Bulletin de la Societe Linneenne de Normandie\1: 68-102. [Mattick Rec.# 27692] Keywords: GYMNODERMA\HEPPIA\PHYSCIDIA\POLYCAULONIA
Abstract: genera Heterina, Polycauliona, Gymnoderma and Physcidia