A synopsis of the lichen genus Xanthoparmelia (Vainio) Hale (Ascomycotina, Parmeliaceae) / Mason E. Hale (Smithsonian contributions to botany ; no. 74)
A synopsis of the lichen genus Xanthoparmelia (Vainio) Hale (Ascomycotina, Parmeliaceae) / Mason E. Hale