250 THE AGARICACEAE OF MICHIGAN 



where I have collected it. It seems to fruit preferably in the autumn 

 and in dry weather. 



239. Stropharia albonitens Fr. (Suspected) 



Monographia, 1863. 



Illustrations: Fries, Icones, PI. 130, Fig. 2. 

 Ricken, Blatterpilze, PI. 63, Fig. 3. 



PILEUS 1-3 cm. broad, canipanulatc, then plane-subumbonate, 

 with a rise i<l pellicle, white to buff, sometimes yellowish- tinged on 

 disk, becoming gray on margin, shining when dry, glabrous, even. 

 FLESH white, moist, thin. GILLS adnate becoming emarginate, 

 subdistant, rather broad, ventricose, gray to purplish-gray then 

 darker, edge minutely white-flmbriate. STEM elongated, 3-7 cm. 

 long, 2-3 mm. thick, equal, stuffed with a white pith then hollow, 

 whitish, tinged yellotr in age, yellowish within, dry, pruinose or 

 flocculose. ANNULUS superior, white, evanescent, soon colored by 

 spores. SPORES 7-9x1-5 mier., elliptical, smooth, purple-brown 

 in mass. CYSTIDIA. ODOR none. 



On the ground in open, grassy woods. Ann Arbor. October. 



Known by the gray color of the gills and the yellowish tinge to 

 the stem in age. 



240. Stropharia coronilla Bres. (Suspected) 



Fung. Trid., Vol. I, 1881 (Fr., Syst, Myc, 1821). 



Illustrations: Ricken, Blatterpilze, PI. 63, Fig. 5. 

 Patouillard, Tab. Analyt., No. 232. 

 Cooke, 111., PI. 535. 



PILEUS 2-1 cm. broad, convex-expanded, subviscid, even, 

 oehraceous-ichitish, glabrous, subpruinose when dry. FLESH white, 

 rather thick. GILLS adnate, rounded behind or sinuate, ventricose, 

 close, moderately broad, fuscous-violaceous then purple-blackish, 

 edge white fimbriate. STEM 3-4 cm. long, 3-5 mm. thick, equal or 

 slightly tapering upward, stuffed then hollow, dry, white, minutely 

 flocculose above the annulus, tibrillose below then shining. AN- 

 NULUS thickish-membranous, persistent, distant from apex, striate 

 above. SPORES 8-9.5 x 4-5 mier.. elliptic-ovate, violet-purple un- 

 der microscope, smooth. CYSTIDIA short, broadly clavate. round- 



