Three new species of Parmelia subgen. Xanthoparmelia (Lichens) from south-eastern Australia

Abstract

Parmelia (subgen. Xanthoparmelia) barbatica, Parmelia (subgen. Xanthoparmelia) burmeisterii and Parmelia (subgen. Xanthoparmelia) pseudohypoleia are described as new from the Australian Capital Territory and New South Wales. The former two species are the first representatives of this subgenus to be described in which usnic acid, barbatic acid and 4-O-demethylbarbatic acid are the major secondary metabolites.