. . . . . . . . . "Vanessa cardui" . . "Passiflora" . . "BJ Stacey. 2015. Vanessa cardui nectar plant Passiflora. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/1937141> 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." .