Species of Parmotrema (Parmeliaceae, Ascomycota) of the central-southern coast of São Paulo Etate, Brazil: I. Gyrophoric and lecanoric chemical group

In a survey of the species pertaining to genera of large parmeliae occurring in the coastal areas of central-southern São Paulo state, Brazil, seven species of Parmotrema (foliose thalli with rounded lobes usually more than 0.5 cm wide with nude lower margins) containing gyrophoric and lecanoric acids as main medullar substances were found. These are typically recognized by the red staining calcium hypochlorite spot tests. Identification key, descriptions, comments, and illustrations based on Brazilian material are provided for these species.

rocky shores; lichens; mangrove; restinga