Melanosporae 



raised ribs on the pileus and its appendiculate margin. The pileus is Pameoius. 

 sometimes grayish. Closely resembling, superficially, Psathyra cor- 

 rugis, which is, however, distinguished by the violet-black gills. 



Spores elliptical, shortly fusiform, 2O//. Q.; i6xii/x W.G.S. 



New York, Peck, 23d Rep. West Virginia, 1881-1885. Pennsyl- 

 vania, New Jersey, frequent on dung. June to frost. Mcllvaine. 



P. retirugis is not a common species, and is a sparse grower, but is 

 frequently found. It is seldom that a mess can be had at one time. It 

 is an excellent species by itself and imparts a good flavor to others. 



P. fimi'cola Fr. fimtts, dung; cola, to inhabit. Pileus /^ K in. 

 across and high, slightly fleshy, convex bell-shaped, obtuse, glabrous, 

 opaque, dingy-gray when moist, paler and yellowish when dry, with a 

 narrow brown encircling zone near the margin. Gills adnate, 2 lines or 

 more broad, gray, variegated with smoky-black. Stem 2-4 in. high, 

 i line or more thick, equal, fragile, whitish, powdered with white meal 

 upward, hollow. Fries. 



Stem soft, fragile, obsoletely silky-striatulate, 2-4 in. long. Pileus 

 when moist commonly smoky-gray, when dry grayish clay-color, some- 

 times discoid. Gills semi-ovate with a minute decurrent tooth. Fries. 



West Virginia, Pennsylvania, New Jersey. Frequent. On dung and 

 richly manured places. June to September. Mcllvaine. 



P. fimicola is neither as large nor heavy as P. solidipes, but in other 

 respects equals it. 



P. SOli'dipes Pk. solidus, solid; pes, a foot. (Plate CII, fig. 3, 4, 

 p. 372.) PileilS 23 in. across, firm, at first hemispherical, then sub- 

 campanulate or convex, smooth, whitish, the cuticle at length breaking 

 up into dingy-yellowish, rather large, angular scales. Gills broad, 

 slightly attached, whitish, becoming black. Stem 2 4 lines thick, firm, 

 smooth, white, solid, slightly striate at the top. Spores very black 

 with a bluish tint. Height of plant 5-8 in. Dung heaps. West Al- 

 bany. June. 



A large species, remarkable for its solid stem. The scales on the 

 pileus are larger on the disk, becoming smaller toward the margin. The 

 upper part of the stipe is sometimes beaded with drops of moisture. 

 Peck, 23d Rep. N. Y State Dot. 



25 385 



