. . . . . . . . . "Sphaerellopsis filum" . . "Phragmidium" . . "Jerry Cooper. 2005. Sphaerellopsis filum associated species with names lookup Phragmidium. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/1365671> 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." .