. . . . . . . . . "Fraxinus pennsylvanica" . . "Alnus incana" . . "Charlie Hohn. 2015. Fraxinus pennsylvanica associated species with names lookup Alnus incana. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/1549661> 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." .