. . . . . . . . . "Biorhiza pallida" . . "Quercus robur" . . "Tig. 2006. Biorhiza pallida forms gall on Quercus robur. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/2652905> 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." .