. . . . . . . . . "Sphaerellopsis filum" . . "Puccinia tiritea" . . "Jerry Cooper. 2017. Sphaerellopsis filum host Puccinia tiritea. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/4952967> 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." .