The lichen genus Allocetraria (Ascomycotina, Parmeliaceae).
The lichen genus Allocetraria (Parmeliaceae) includes eight species distinguished by a palisade plectenchymatous cortex, asci with a very broad axial body, globose or subglobose ascospores, and filiform pycnoconidia. Two new species, A. flavonigrescens Thell et Randl. and A. sinensis Gao, are described, and the new combination A. denticulata (Hue) Thell & Randlane, A. globulans (Nyl.) Thell &a