. . . . . . . . . "Letharia columbiana" . . "Juniperus grandis" . . "Justin. 2014. Letharia columbiana host Juniperus grandis. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/824886> 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." .