. . . . . . . . . "Helenium autumnale" . . "Lobelia cardinalis" . . "sam_stuber. 2017. Helenium autumnale associated with Lobelia cardinalis. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/9532624> 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." .