Ahmadjian, V 1970: The lichen symbiosis: its origin and evolution. - Evolutionary Biology [Appleton Century Crofts, New York]4: 163-184. [RLL List # 76 / Rec.# 219] Keywords: EVOLUTION/ SYMBIOSIS/ TREBOUXIA/ MONOPHYLETIC
Abstract: 10 fig. 3 tab. ["What has been proposed in this article is that lichens that contain Trebouxia as the algal symbiont constitute a single group of monophyletic origin."]