. . . . . . . . . "Pieris virginiensis" . . "Erythronium americanum" . . "Chris Cheatle. 2017. Pieris virginiensis nectar plant Erythronium americanum. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/5976275> 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." .