. . . . . . . . . "Pieris napi" . . "Corydalis cava" . . "fausto. 2017. Pieris napi nectar plant Corydalis cava. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/5329140> 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." .