A key to species of the Ocellularia papillata, perforata and terebrata morphodemes (Ascomycota: Graphidaceae)

Abstract

A key is presented to 69 species similar or related to Ocellularia papillata, O. perforata, and O. terebrata, that is species with columellate ascomata, small, hyaline, transversely septate ascospores, and either lacking secondary substances or with the protocetraric or psoromic acid chemosyndrome. Six sorediate species are also mentioned, for a total of 75 taxa. Four new combinations are proposed: Ocellularia erodens (R. C. Harris) Lücking, O. khaoyaiana (Homchant. & Coppins) Lücking, O. rongklaensis (Homchant. & Coppins) Lücking, and O. subminuta (Homchant. & Coppins) Lücking. The following eleven previously synonymized names are reinstated: Ocellularia cinereoglaucescens (Vain.) Zahlbr., O. collativa (Kremp.) Zahlbr., O. comparabilis (Kremp.) Müll. Arg., O. excavata (Vain.) Zahlbr., O. gymnocarpa (Nyl.) Zahlbr., O. protocetrarica Hale, O. rufocincta Müll. Arg., O. violacea Räsänen, O. viridipallens Müll. Arg., and O. zamboangensis (Vain.) Zahlbr.