Abstract

Six species of the phycobionts,Trebouxia, have been successfully isolated and cultured from Taiwan fruticose lichens, mainly from the family of Cladoniaceae. It has been reported that the algal symbionts isolated from fruticose lichens (i. e. Stereocaulon, Cladonia, Pilophorus) (Ahmadjian 1960) all belonged to Group I. But based on this investigation,Taiwan fruticose lichens contain phycobionts Trebouxia from both Group I and Group II. It has been further assumed that distinct species of lichens, contain the same phycobionts, (at least, at the species level), but many from of Trebouxia which differ bith morphologically and physiologically, occur in the same species of lichens.