. . . . . . . . . "Poecilanthrax arethusa" . . "Hulsea californica" . . "Patricia Simpson. 2014. Poecilanthrax arethusa nectar plant Hulsea californica. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/878993> 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." .