. . . . . . . . . "Papilio cresphontes" . . "Vernonia gigantea" . . "Michael Rayner. 2013. Papilio cresphontes nectar plant Vernonia gigantea. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/381494> 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." .