. . . . . . . . . "Colias philodice" . . "Trifolium pratense" . . "roy pilcher. 2015. Colias philodice nectar plant Trifolium pratense. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/1950408> 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." .