800 THE AGARICACEAE OP MICHIGAN 



gills. It has scarcely any tinge of gray to either cap or stem. The 

 si cm is sometimes strongly entwined on the grass stalks or obliquely 

 attached to buried roots, etc. Fries has not adhered to the same 

 description in his different works; our plants agree best with the 

 description in Icones, although in size and build they are more 

 like the figures of M. dissiliens of the same work. The cystidia 

 are large and striking. 



**Pileus fundamental!!/ gray, or some shade of gray, or white. 



852. Mycena parabolica Fr. 



Epicrisis, 1880. 



Illustrations : Fries, Icones. PI. 80, Fig. 3. 

 Cooke, 111., PL 224. 



PILEUS 1-3 cm. broad, campannlate. margin at length recurved, 

 umbo obtuse, striate, becoming coarsely rugose-striate, sometimes 

 silicate, moist, glabrous, at first blackish-cinereous, especially on 

 center, then gray to pearl-gray or whitish when dry, disk darker. 

 FLESH thin, concolof at first. GILLS narrowly adnate, not un- 

 cinate, narrow, at first ascending and close, then subdistant, 

 whitish, then tinged cinereous, edge entire. STEM 3-10 cm. long, 

 1.5-2.5 mm. thick, sometimes long and rooting, cartilagi- 

 nous, hollow, terete or compressed, even, glabrous, cinereous, fad- 

 ing, the rooting base white-hairy and carved or flexuous. SPORES 

 8-10x5-7 micr., elliptical, ends obtuse, smooth, white. CYSTIDIA 

 few, lanceolate, soon collapsing, sometimes on the edge of the gills ; 

 sterile cells none. BAS1 DIA 4-spored, 27 x 8 micr., with prominent 

 awl-shaped sterigmata, (! micr. long. ODOR none. 



Solitary, • gregarious or subcaespitose. On or around decaying 

 logs, stumps in mixed woods of white pine and beech. New Rich- 

 mond. September. 



This gray Mycena is frequent locally. The margin of the cap be- 

 comes expanded or recurved and is then coarsely sulcate on account 

 of the thin flesh. The young stage distinctly shows its non-identity 

 with 1/. galcriculata. The stem is not as rigid as that of its neigh- 

 bors and becomes somewhat flaccid in age. 



