. . . . . . . . . "Frangula purshiana" . . "Erythronium oregonum" . . "Howard Bruner. 2018. Frangula purshiana associated species with names lookup Erythronium oregonum. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/10051280> 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." .