. . . . . . . . . "Vanessa cardui" . . "Grindelia hirsutula" . . "Di. 2017. Vanessa cardui nectar plant Grindelia hirsutula. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/7394955> 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." .