. . . . . . . . . "Sorbus scopulina cascadensis" . . "Sorbus scopulina" . . "John Brew. 2012. Sorbus scopulina cascadensis associated species with names lookup Sorbus scopulina. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/111816> 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." .