. . . . . . . . . "Danaus chrysippus" . . "Dittrichia viscosa" . . "Katja Schulz. 2014. Danaus chrysippus nectar plant Dittrichia viscosa. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/1108501> 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." .