. . . . . . . . . "Selenicereus spinulosus" . . "Peniocereus greggii" . . "Jason Penney. 2015. Selenicereus spinulosus nectar plant Peniocereus greggii. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/1422425> 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." .