Habitat: in parks, gardens, and roadsides
Substrate: woodchip mulch
Origin: Introduced
Conservation Status: Not of concern
Edibility: Not edible.
Not edible.
Spores are brown; growth up to 3 inches; cap diameter of up to 4 inches. Agrocybe rivulosa has a wrinkled cap; Agrocybe praecox has similar sprouting patterns but as a stem with a distinct ring.
Sources: Roberts, Peter and Evans, Shelley. The Book of Fungi. Chicago, The University of Chicago Press, 2011.
PNW Herbaria: Specimen records of Agrocybe putaminum in the Consortium of Pacific Northwest Herbaria database
CalPhotos: Agrocybe putaminum photos