. . . . . . . . . "Vanessa cardui" . . "Erysimum capitatum" . . "Lynn Watson, Santa Barbara. 2009. Vanessa cardui nectar plant Erysimum capitatum. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/129132> 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." .