. . . . . . . . . "Vanessa cardui" . . "Eutrochium maculatum" . . "Kent McFarland. 2017. Vanessa cardui interaction->visited flower of Eutrochium maculatum. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/8036944> 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." .