. . . . . . . . . "Danaus plexippus" . . "Gomphocarpus physocarpus" . . "Sara Smerdon. 2017. Danaus plexippus interaction->egg(s) laid on/in Gomphocarpus physocarpus. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/5116992> 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." .