242 THE AGARICACEAE OF MICHIGAN 



us the white variety is the common form, although an occasional 

 patch of the variety with brownish and more fibrillose caps may 

 be found. The caps are apparently not as large as in more moist 

 climates, although occasionally one finds large plants in cultivated 

 fields. Var. villaticus Fr. has been raised to specific rank by Bres- 

 adola ; the pileus of this species is large and scaly and the stem is 

 scaly and coated or subvolvate by the inferior veil. I have not seen 

 it. No discussion is given here of the cultivated varieties. Those 

 interested in their cultivation should read Duggar's "The Principles 

 of Mushroom Growing, etc." Bull. No. 85, Bureau of Plant Ind., 

 U. S. Dept. Agr., or the chapter in Atkinson's Mushrooms, last 

 edition. 



230. Psalliota silvatica Fr. (Edible) 



Epicrisis, 1836. 



Illustrations : Bresadola, Fung. Trid., Vol. I, PL 90. 

 Cooke, 111., PL 530 (=P. perrara per Bres.) 

 Michael, Fiihrer f. Pilzfreunde, Vol. II, No. 68. 



"PILEUS 8-11 cm. broad, campanulate then expanded, at first 

 cinereous then yellowish-whitish with a rufous-fuscous center, cover- 

 ed by brown scales. FLESH rather thick except margin. GILLS 

 free, remote, crowded, white at first, then rosy-flesh color, at length 

 reddish-cinnamon. STEM 6-9 cm. long, 1-1.5 cm. thick, hollow, 

 whitish, glabrous, or subfibrillose, equal or with a bulbous base, 

 bulb sometimes marginate, white within when broken, yellowish at 

 apex, slightly rose-red on sides. ANNULUS simple, ample, distant, 

 superior, white, substriate, flocculose. SPOEES 6-7x3.5-4 rnicr., 

 elliptical, incarnate-fulvous. BASIDTA clavate, 25 x 6-7 micr. 

 ODOR and TASTE agreeable." 



Reported by Longyear. In woods. 



The description is adopted from Bresadola. The descriptions 

 in our mushroom books are scarcely satisfactory. The figures of 

 Gooke and Gillet are said to depart from the characteristics of the 

 plant. It seems to be rare, and I have never collected it. The gray 

 color of the young plant and the truly brown color of the scales, 

 the hollow stem and spores ought to make it recognizable. Ricken 

 emphasizes the change of gills and flesh to blood-red when bruised 

 and considers P. haemorrhoidaria as an autumnal form. This com- 

 plicates matters, especially in the absence of specimens of our own. 



