Agrocybe putaminum
Beit. Bot. Centralbl. Abt. B, 56: 167 1936.
Common Name: none
For descriptions see Pegler & Legon & Vellinga.
Scattered to gregarious in woodchips or other woody debris in disturbed areas; fruiting in summer through fall, widely distributed. Especially common in urban areas.
Unknown.
Agrocybe putaminum often fruits on woodchips or in the lignin-rich soil of landscaped areas. It can be recognized by a velvety yellowish brown cap, adnate to notched brown gills, and a pruinose stipe that lacks an annulus and darkens where handled. Agrocybe praecox is similar, but may have a paler, less velvety cap and has a conspicuous partial veil that usually leaves a thin annulus on the stipe apex.
Noordeloos, M.E. , Kuyper, T.W. & Vellinga, E.C. (2005). Flora Agaricina Neerlandica — Critical monographs on the families of agarics and boleti occurring in the Netherlands. Volume 6. Coprinaceae & Bolbitiaceae. Taylor & Francis: Boca Raton, FL. 227 p.
Knudsen, H. & Vesterholt, J. ed. (2008). Funga Nordica: Agaricoid, boletoid and cyphelloid genera. Nordsvamp: Copenhagen, Denmark. 965 p.
Knudsen, H. & Vesterholt, J. ed. (2012). Funga Nordica: Agaricoid, boletoid, clavarioid, cyphelloid and gastroid genera. Vol. 2. Nordsvamp: Copenhagen, Denmark. 572 p.
Pegler, D. N. & Legon, N. W. (1998). Profiles of Fungi: 92 Agrocybe putaminum. Mycologist 12(2): 60. (PDF)
Siegel, N. & Schwarz, C. (2016). Mushrooms of the Redwood Coast. Ten Speed Press: Berkeley, CA. 601 p.
Vellinga, E.C. (2008). Wood Chip Fungi: Agrocybe putaminum in the San Francisco Bay Area. Fungi 1(4). (PDF)