. . . . . . . . . "Danaus plexippus" . . "Liatris aspera aspera" . . "Roberto R. Calderón. 2014. Danaus plexippus nectar plant Liatris aspera aspera. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/1832159> 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." .