=T. tigri´num= Schaeff.—spotted like a tiger. =Pileus= 2 in. broad, pallid-brown, variegated with crowded and _darker dingy-brown spots_, compactly fleshy, convex then expanded, obtuse, repand. =Flesh= thick, firm, white, unchangeable, but thin at the involute margin. =Stem= 1 in. long and thick, very compact, solid, pruinate, white. =Gills= rounded behind, at length decurrent with a tooth, crowded, narrow, white, at length darker. Solitary or cespitose. Very distinguished, obese, and without any marked smell of new meal. In fir woods and open grassy ground. Rare. June to July. _Stevenson._ Edible, _Cooke_, _Fries_. =T. albel´lum= Fr.—_albus_, white. =Pileus= about 3 in. broad, becoming pale-white, passing into gray when dry, fleshy, thick at the disk, thinner at the sides, _conical then convex_, gibbous when expanded, when in vigor moist on the surface, _spotted (mottled) as with scales_, the thin margin naked. =Flesh= soft, floccose, white, unchangeable. =Stem= curt, 1½-2 in. long, 1 in. thick at the base, reaching ½ in. toward the apex, _solid_, fleshy-compact, ovato-bulbous (conical to the middle, cylindrical above the middle), fibrillose-striate, white. =Gills= very much _attenuated behind, not_ emarginate, _becoming broad in front_, very crowded, quite entire, white. _Fries._ =Spores= elliptical, 6–7×4µ _Massee_; ovoid, 3µ _W.G.S._; ovoid, 3µ _Cooke_. =Pileus= not becoming yellow. =Odor= weak when fresh, taste pleasant, almost that of cooked flesh. There are two forms: one larger, solitary, another smaller, connato-cespitose, quite as in A. albellus Sow. It is often confounded with smaller forms of A. gambosus. _Stevenson._ North Carolina, _Curtis_. Damp woods. Edible. VI.—SPONGIO´SA. Pileus compact then spongy, smooth, moist. * _Gills not discolored._ =T. vires´cens= Pk.—_viresco_, to grow green. =Pileus= convex or nearly plane, sometimes centrally depressed, moist, bare, _dingy-green_, the margin sometimes wavy or lobed. =Gills= close, gradually narrowed toward the outer extremity, rounded or slightly emarginate at the inner, white. =Stem= subequal, _stuffed or hollow_, thick but brittle, whitish, sometimes tinged with green. =Spores= broadly elliptical, 5×4µ. =Pileus= 3–5 in. broad. =Stem= 3–4 in. long, 6–12 lines thick. Thin woods. Essex county. July. The dull smoky-green hue of the pileus is the distinguishing feature of this species. _Peck_, 44th Rep. N.Y. State Bot. Quite common in West Virginia, New Jersey and Pennsylvania. July to October. _McIlvaine._ Edible. Tastes somewhat like many Russulæ, when cooked. Flavor good. =T. fumidel´lum= Pk.—smoky. =Pileus= convex, then expanded, subumbonate, bare, moist, _dingy-white or clay-color clouded with brown_, the disk or umbo generally smoky-brown. =Gills= crowded, subventricose, whitish. =Stem= equal, bare, solid, whitish. =Spores= minute, subglobose, 4.5×4µ. =Pileus= 1–2 in. broad. =Stem= 1.5–2.5 in. long, 2–3 lines thick.