Agaricus hondensis (Felt-ringed Agaricus)

Description: Large, white cap with small, pinkish-grey fibers, thick ring on stalk, and foul-smelling, bulbous base; in woods.

Cap: 3-6" (7.5-15 cm) wide; convex; dry, smooth or with small, flattened fibers; white to pale pinkish-gray, darkening with age; yellow tih KOH. Odor mild to creosotelike.

Gills: free, close to crowded, narrow; grayish-pink, becoming purplish-brown.

Stalk: 3-6" (7.5-15 cm) long, 3/8-3/4" (1-2 cm) thick, with bulbous base; smooth, whitish, darkening with age.

Veil: partial veil membranous, white, with patches on lower surface; leaving persistent, thick flaring to pendant ring on upper stalk.

Spores: 4.5-5.5 X 3-3.5 m; elliptical, smooth, purple-brown. Spore print dark-brown.

Edibility: Poisonous

Season: September-October; November-February in California.

Habitat: Scattered to several, in woods.

Range: British Columbia south into California

Look-alikes: The poisonous A.meleagris becomes flat-topped and has darker scales, a sometimes narrowing stalk, thinner ring, and more unpleasant odor.

Comments: This poisonous mushroom's woodland habitat, odor, and staining reaction with KOH allow it to be differentiated from known edible species of Aaricus).

Agaricus hondensis image and excerpt from Gary H. Lincoff's National Audubon Society Field Guide to North American Mushrooms, (1981/2004, pp. 506-507, image #158).

Agaricus hondensis (Felt-ringed Agaricus)