Closely allied to A. campestris, from which it may be separated by its smaller size, the yellowish hue of the dry plant and by the smaller spores. _Peck_, 41st Rep. N.Y. State Bot. Mt. Gretna, Pa. Parade ground, with A. campester; Haddonfield, N.J. August to frost. _McIlvaine._ A. comptulus appears frequently in the latitude of Philadelphia. It is a neat species, but not substantial in flesh. Here it usually grows close to the ground. The ring is very evanescent. Its edible qualities are those of A. campester. =A. silvat´icus= Schaeff.—belonging to woods. =Pileus= thin, at first convex or bell-shaped, then expanded, _gibbous or subumbonate_, fibrillose or variegated with a few thin tawny brownish or reddish-brown _spot-like adpressed scales_, whitish, brownish or smoky-gray, the disk sometimes tinged with red or reddish-brown, the flesh white or faintly reddish. =Lamellæ= thin, close, free, narrowed toward each end, reddish, then blackish-brown. =Stem= rather long, _equal or slightly tapering upward_, hollow, whitish. =Spores= elliptical, 5–6.5×4–5µ. =Plant= 3–5 in. high. =Pileus= 2–4 in. broad. =Stem= 4–6 lines thick. Woods. Summer and autumn. Not common. _Peck_, 36th Rep. N.Y. State Bot. Massachusetts, _Farlow_; Minnesota, _Johnson_; California—edible, _H. and M._ West Virginia, 1881–1885, New Jersey, Pennsylvania. August to frost. In pine and mixed woods. _McIlvaine._ Edible, _Curtis_. Edible, _Peck_. In taste and smell A. silvaticus resembles A. silvicola, but is stronger. It is a frequent but not common species in the localities where I have found it. Quantities of it have not occurred, but myself and friends have eaten it for years, knowing no distinction in effect between it and allied species. Its strong taste requires that it be well cooked. It does not lose its high flavor, which may be objectionable to some. I prefer using its juices as a flavoring. =A. diminuti´vus= Pk.—diminutive. =Pileus= thin, fragile, at first convex, then plane or centrally depressed, sometimes slightly umbonate, whitish or yellowish, faintly spotted with small thin silky appressed brownish scales, the disk brownish or reddish-brown. =Lamellæ= close, thin, free, ventricose, brownish-pink becoming brown, blackish-brown or black. =Stem= equal or slightly tapering upward, stuffed or hollow, smooth, pallid. =Annulus= thin, persistent, white. =Spores= elliptical 5×4µ. =Plant= 1.5–2 in. high. =Pileus= 1–1.5 in. broad. =Stem= 1–2 lines thick. Woods. Croghan and Sandlake, N.Y. August. Autumn. This is a small but symmetrical and beautiful Agaric. It is perhaps too closely related to the preceding species (A. silvaticus), of which it may possibly prove to be a mere variety or dwarf form. Its pileus is quite thin and fragile. Usually the darker or reddish hue of the disk gradually loses itself in the paler color of the margin, but sometimes the whole surface is tinged with red. _Peck_, 36th Rep. N.Y. State Bot.