Agaricaceae 



Trichoioma. When wet the caps become darker and have a mottled appearance. 

 They are tender, but rather tasteless. The species serves to make 

 quantity when cooked with others of higher flavor. 



T. pipera'tum ?\a. piper, pepper. Pileus rather thin, firm, dry, 

 convex, obtuse or subumbonate, virgate with innate brownish fibrils, 

 varying in color from grayish-brown to blackish-brown, sometimes with 

 greenish or yellowish tints. Flesh white or whitish, taste acrid. Gills 

 broad, close, rounded behind, adnexed, whitish or yellowish. Stem 

 generally short, equal, solid, silky, slightly mealy or pruinose at the 

 top, white or slightly tinged with yellow. Spores elliptic, 6-7^ long, 

 5/u, broad. Pileus 4-7 cm. broad. Stem 5~7 cm. long, 6-12 mm. thick. 



The central part of the pileus is sometimes a little darker than the 

 rest. The peppery or acrid taste is very distinct and remains in the 

 mouth many minutes. This and the innately fibrillose character of the 

 pileus are distinguishing characters of the species. The plants appear 

 from September to November. Peck, Torr. Bull., Vol. 26. 



Mt. Gretna, Pa. October to November, 1898, on damp ground 

 among moss. Mcllvaine. 



Cap up to 3 in. across, bell-shaped, then convex, depressed in center 

 and undulate, light-brown, darker toward center, dry, minutely fibril- 

 lose. Flesh thick, white, thin toward margin. Gills emarginate, un- 

 equal, not forked. Stem 1*2-2 in. long, hard, equal or enlarging 

 toward base, white, silky, striate. 



Though peppery raw, this Trichoioma is of good substance and flavor 

 when cooked. 



B. PILEUS EVEN, SMOOTH, NOT DOWNY, SCALY, NOR VISCID, ETC. 

 V. GUTTA'TA. Pileus marked with drop-like spots or rivulose. 



* Gills whitish. 



T. gambo'sum Fr. gambosus, swelling near the hoof. Pileus 

 3-4 in. and more broad, becoming pale-tan, fleshy, hemispJierico-convex , 

 then flattened, obtuse, undulated and bent backward, even, smooth, but 

 spotted as with drops, at length widely cracked (not, however, torn into 

 squamules), the margin at the first involute and tementose. Flesh thick, 

 soft, fragile, white. Stem 2 in. and more long, 3'a-i in. thick, solid, 

 fleshy-firm, almost equal, often curved-ascending at the base, white, 



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