. . . . . . . . . "Alnus rhombifolia" . . "Umbellularia californica" . . "Charlie Hohn. 2005. Alnus rhombifolia associated species with names lookup Umbellularia californica. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/374039> 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." .