228 THE AGARICACEAE OF MICHIGAN 



The description is adopted from Fries. Our plants had a more 

 convex pileus, at first dark gray then rufescent or ochraceous; the 

 gills were rather narrow, sub-distant, edge white-fimbriate; stem 

 fragile, stuffed-hollow ; the spores elliptic-oblong, 10-12.5 x 6-7 micr., 

 smooth, purplish-black under microscope. CYSTIDIA few or none. 

 The crenate folds of the margin of the cap included two to three 

 striae. It agrees well with Cooke's figure. 



Panceolus Fr. 

 (From the Greek, panaiolus, meaning all-variegated.) 



Black-spored. Gills grayish-black, dotted by the spores, ascend- 

 ing, more or less attached but seceding. Stem central, polished, 

 subrigid. Pileus not striate, rather firm but not very fleshy. 

 Veil woven-submembranous or subsilky. 



Dung-inhabiting, slender-stemmed, slightly persistent but putre- 

 scent mushrooms, whose otherwise glabrous pileus is either ap- 

 pendiculate or slightly white-silky on the margin by the collapsing 

 of the more or less evanescent veil. Often ring-marked on the stem 

 by the spores falling on the remnants of the veil. It is a rather 

 small genus, and the rarer species are not well known. Peck has 

 described five species, of which P. epimyces is to be looked for 

 under Stropharia. The spores are opaque, black, smocfth and usual- 

 ly lemon-shaped or elliptical; they remain aggregated in tiny 

 clusters on the gills as these mature and so produce the dotted- 

 variegated appearance of the gills. Later the gills become entirely 

 gray-black to black. 



218. Panceolus solidipes Pk. (Edible) 



X. Y. State Mus. Eep. 23, 1872. 



Illustrations:- Ibid, PL 4, Fig. 1-5. 



Hard, Mushrooms, PL 41, Fig. 278, p. 343. 



White, Conn. State Geol. & Nat. Hist. Surv. Bull., No. 3, PL 



27, p. 53. 

 Plate XLIY of this Report. 



PILEUS 4-10 cm. broad, large, firm, at first hemispherical then 

 broadly convex, obtuse, moist, glabrous, ivhite when fresh, even, 

 at length rimose-scaly and yellowish, especially on disk. FLESH 

 rather thick, white, watery near the gills. GILLS ascending, nar- 



