Conservation Status: Not of concern
Edibility: Edible but not enjoyable.
Edible but not enjoyable.
Although several very similar species have been described, the wide variation that occurs prevents them from being clearly separable from each other, and so it seems better to apply one name and accept the variability associated with it.
Sources: Trudell, Steve and Joe Ammirati. Mushrooms of the Pacific Northwest, Timber Press, Inc. 2009.
PNW Herbaria: Specimen records of Agrocybe semiorbicularis in the Consortium of Pacific Northwest Herbaria database
CalPhotos: Agrocybe semiorbicularis photos