. . . . . . . . . "Sorhagenia nimbosa" . . "Frangula californica" . . "Karen Paulsell. 2017. Sorhagenia nimbosa host Frangula californica. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/6260740> 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." .