OBSERVATIONS ON FREE-LIVING TREBOUXIA DE PUYMALYAND PSEUDOTREBOUXIA ARCHIBALD, AND EVIDENCE THAT BOTH SYMBIONTS FROM XANTHORIA PARIETINA (L.) TH. FR. CAN BE FOUND FREE-LIVING IN NATURE
Department of Botany The George S. Wise Faculty of Life Sciences, Tel Aviv University, 69978, Tel Aviv, Israel;Department of Microbiology, The George S. Wise Faculty of Life Sciences, Tel Aviv University, 69978, Tel Aviv, Israel