. . . . . . . . . "Pontia sisymbrii" . . "Amsinckia" . . "Paul G. Johnson. 2016. Pontia sisymbrii eating Amsinckia. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/2757903> 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." .