. . . . . . . . . "Bombus fervidus" . . "Helianthus annuus" . . "Judith Lopez Sikora. 2017. Bombus fervidus pollinates Helianthus annuus. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/7951926> 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." .