There are caracterized 77 genera of lichens from Morro San tana, Porto Alegre, R S, with analytical keys, short descriptions and illustrations; Anisomeridium MuB. Arg , Baeomyces Pers., Chrysotkrix Mont., Laurera Reichemb., Maronea Massal., Pseudopyrenula Mull. Arg. and Ramalea Nyl. are added to the know flora of Rio Grande do Sul State.
Lichens; floristics