The phycobiliprotein pigment content of eight species of Southern Hemisphere Pseudo- cyphellaria with cyanobacteria (Nostoc sp.) as photobionts was studied by means of ion-exchange chromatography. C-phycoerythrin, the dominant pigment, C-phycocyanin, allophycocyanin and allo- phycocyanin B were identified and the total phycobiliprotein content ranged from 0.732 (Pseudocyphellaria bartlettii) to 1.847 mg g~1dry mass (P. dissimilis). The amino acids of proteins of C-phy coerythrin, C-phycocyanin and allophycocyanin were analysed. The biliproteins as complementary chromatic adaptation in lichens species is described. lichens, Pseudocyphellaria, biliproteins, complementary chromatic adaptation.