Ahti collected the type in the Cochrane District of Ontario, Canada, on the west end of Martison Lake. There he found it growing on the trunk of a large willow tree on the lake shore. He suggested that it is a strictly North American species with a transcontinental boreal range.[2]
^ abAhti, T. (1966). Parmelia olivacea and the allied non-isidiate and non-sorediate corticolous lichens in the northern hemisphere. Acta Botanica Fennica. Vol. 70. Helsinki: Societas pro Fauna et Flora Fennica. p. 54.
^Blanco, Oscar; Crespo, Ana; Divakar, Pradeep K.; Esslinger, Theodore L.; Hawksworth, David L.; Lumbsch, H. Thorsten (2004). "Melanelixia and Melanohalea, two new genera segregated from Melanelia (Parmeliaceae) based on molecular and morphological data". Mycological Research. 108 (8): 873–884. doi:10.1017/S0953756204000723. PMID15449592.