. . . . . . . . . "Bombus bifarius" . . "Dasiphora fruticosa" . . "Charlie Hohn. 2014. Bombus bifarius interaction->visited flower of Dasiphora fruticosa. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/820538> 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." .