Leucosporae 



thick, solid, elastic, equal with exception of the thickened base, cyl- Trichoioma. 

 indrical, firm, smooth, evidently longitudinally sulcate, whitish. Grills 

 arcuato-adnate or broadly horizontally emarginate, acute at both ends, 

 very crowded, quite entire, very many shorter, somewhat branched 

 behind, white. 



Odor moldy. Striking in appearance;- the chief of this group. 

 There is a variety wholly white. In pastures and grassy woods. Stev- 

 enson . 



Spores 5-6/x Massee. 



Distinguished by the grooved stem and crowded gills, which are 

 adnate when the pileus is expanded. Often growing in rings. 



North Carolina, Curtis. Not reported elsewhere. Esculent. Cooke. 

 Much eaten in Europe. 



T. bre'vipes Bull. brevis, short; pes, a foot. PileilS about 2 in. 

 broad, umber then becoming pale, fleshy, soft, convex then becoming 

 plane, even, smooth, moist (opaque when dry) ; flesh of the pileus be- 

 coming brownish when moist, becoming white when dry. Stem solid, 

 very rigid, at length fibrous, pruinate at the apex , externally and in- 

 ternally fuscous; otherwise very variable, sometimes very short, 23 

 lines only long and thick, attenuated downward; commonly I in., 

 sometimes bulbous, sometimes equal, more slender. Gills emarginato- 

 free, crowded, ventricose, disappearing short of the margin, quite entire, 

 becoming fuscous then whitish. Solitary. Inodorous. The pileus is 

 often stained with soil. Stevenson. 



Spores elliptical, 7.5x5^ Peck; 7-4^ Massee. 



Esculent and very delicate. Paulet. Esculent. Cooke. 



T. llll'mile Pers. low, small. (Plate XVIII, fig. 6, p. 60.) Very 

 variable in form and color. Cap 2-3 in. across, convex then expanded, 

 wavy, flattened, sometimes umbonate, sometimes depressed, glabrous, 

 occasionally powdered with thin white dust, fragments of veil, some- 

 times viscid. Color changes with moisture, blackish, grayish, and 

 having somewhat the appearance of an oyster. Gills rounded-adnexed, 

 with a slight tooth, arcuately decurrent, crowded, 2-3 lines broad, 

 whitish. Flesh soft, whitish or grayish. Stem 1-2 in. long, up to K 

 in. thick, equal (misshapen by pressure when tufted), light gray, cov- 



6 81 



