. . . . . . . . . "Pyrisitia lisa" . . "Helenium amarum" . . "C. L. Mann. 2014. Pyrisitia lisa nectar plant Helenium amarum. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/876766> 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." .