. . . . . . . . . "Danaus plexippus" . . "Salvia ballotiflora" . . "Chuck Sexton. 2017. Danaus plexippus nectar plant Salvia ballotiflora. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/8744184> 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." .