Mycologia 4: 296. 1912.
Common Name: none
Cap 7-14 cm broad, convex at first, then plane; surface dry, white shading to a light greyish-brown disk, covered with appressed pale pinkish-brown to lilac brown scales. Odor mild or faintly of phenol. Turning yellow in KOH.
Gills free, close, pale at first then pinkish-brown, finally blackish-brown.
Stipe 8-14 cm long, 1.5-2.5 cm thick, bulbous at base, smooth above and below the ring; veil thick, felt-like, yielding a well developed superior ring. Stipe base bulbous, turning pale yellow when bruised; odor faintly of phenol.
Spores 4.0-6.0 X 3-4.5 µm, elliptical, smooth; spore print blackish-brown.
Found from late fall to early spring in mixed hardwood-coniferous forest.
Toxic. Causes gastrointestinal upsets.
Agaricus hondensis is a handsome, robust species that unfortunately is toxic. It is recognized by its large size, flattened pale lilac-brown cap scales, thick felt-like ring and bulbous stipe base. The phenolic odor is often faint but KOH will cause a yellowing reaction. It is sometimes mistaken for A. subrutilescens (wine-colored Agaricus) with which it often fruits. The latter, however, has a distinctly darker cap, lacks a bulbous base, and has cottony scales on the stipe below the ring.
Kerrigan, Richard W. (1986). The Agaricales (Gilled Fungi) of California. 6. Agaricaceae. Mad River Press: Eureka, CA. 62 p.
Kerrigan, R.W., Callac, P., Guinberteau, J., Challen, M.P. & Parra, L. (2005). Agaricus section Xanthodermatei: a phylogenetic reconstruction with commentary on taxa. Mycologia 97: 1292-1315.
Murrill, W.A. (1912). The Agaricaceae of the Pacific coast—III. Mycologia 4(6): 291-308. (Protologue)
Smith, A.H. (1949). Mushrooms in their Natural Habitats. Sawyer's Inc: Portland, OR. 626 p.