Agaricus tubescens, Pers. under a grove of Pinustataeis, Dunkerrow 19 August 1859. Pileus large, convex, flattened, at length concave above, dark brown; warts crowded concentrically, pale tawny brown, subepider- mal, fistulose; margin smooth; flesh turning red. Gills white. Stem bulbous, minutely scaly, subfistulose, with a persistent white membranous ring. Pileus 4-5 inches in diameter, the young convex, of an olive dark brown; warts conical, confluent, with a row of white filaments. Flesh turning reddish, especially next the cuticle, when cut in all parts of the plant. Gills semi-lanceolate, sometimes 4 in a set, adnexed by a fine prominent line, white, at length brownish; fibrules subreticulat. Stem about 5 inches long, nearly solid, bulbous, the bulb near lower part with a reddish-brown hue; with minute, black scales, apparently the dermatacton of an article. Ring hanging down on the stem, white, longitudinally striated; slight at first but unpleasant—but in decay almost intolerable, as of rotting fish. Little taste, not discernible. This agrees quite with the description of A. amplexus Pers. Lyc. p. 254. This however is not said to have the flesh turning red.