. . . . . . . . . "Pieris rapae" . . "Carduus acanthoides" . . "David Kaposi. 2016. Pieris rapae nectar plant Carduus acanthoides. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/4853108> 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." .