. . . . . . . . . "Colias philodice" . . "Lythrum salicaria" . . "Barbara Charlton. 2017. Colias philodice nectar plant Lythrum salicaria. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/7822911> 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." .