. . . . . . . . . "Fomes fomentarius" . . "Betula pendula" . . "Martin Grimm. 2016. Fomes fomentarius host species with names lookup Betula pendula. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/3967388> 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." .