. . . . . . . . . "Illosporiopsis christiansenii" . . "Physcia adscendens" . . "Tig. 2017. Illosporiopsis christiansenii parasite host Physcia adscendens. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/9044663> on 05 Apr 2018." . . . . "http://iNaturalist.org is a place where you can record what you see in nature, meet other nature lovers, and learn about the natural world." .