NATURAL 1IISTOIO SI i;\ El !.; 



small, acute umbo. The lamellae although united to each other 

 behind are adnate to the stem, and nol to a separate colla 

 Marasmius rotula. Cespitose, several individu 

 proliferous stems and a whitish tomentum. 1 do nol find an 



spore measurements of this species. In our plant thi 

 globose, (J to 7 fx. 



Mycena galericulata Scop. (Plate [V). 



Pileus obtusely conical or campanulate, sometimes umbon 

 long-striate, variable in color, but some shade of brown or ciner- 

 eous. 



Lamellae not crowded, uncinate, decurrent-toothed, abruptly 

 pointed at the outer extremity, venose-connected, distincl at the 

 stem, white or flesh-colored. 



Stem firm, smooth, hollow, with white filaments at the ba 



Pileus 1 to 3.5 cm. in diameter, stem 6 to L2 cm. loi 



Common on stumps, decayed logs, stick-, etc. Very variable 

 in size and color. Often densely cespitose. Upon the same log 

 may be found plants varying from 6 mm. to 6 cm. in diamel 

 although the latter size is unusual. 



Mycena alcalina Fr. 



Pileus campanulate, obtuse, margin at length spreading 

 sometimes upturned, deeply striate when moist, shining when 

 dry, color various, pallid or with a tinge of pale yellowish-green, 

 the disk darker; odor strong and nitrous. 



Lamellae adnate, narrowed behind, rather distant, whitish 

 then glaucous or grayish. 



Stem hollow, equal, pale, sometimes yellow, shining, sligh 

 viscid, the base downy. 



Pileus 1.5 to 9 cm. broad; stem 5 to 7.~> cm. long, 2 mm. thi 

 Solitary or densely cespitose. 



On dead stump, River Forest. June. Pileus whitish-fuligi- 

 nous, the disk darker or blackish; odor strongly alkali] 



ellipsoid, 9 x 7 //.. 



Mycena tenuis Bolt. 



Pure white. Pileus very brittle, membranaceous, campani 

 late then convex, obtuse, striate more than half way to the 

 margin crenulate. 



Lamellae adnate, ascending, distant, thin, water} - . 



Stem straight, equal, glabrous, pellucid, minutely fistul 



Pileus about 12 mm. broad; stem 5 to 7.5 cm. long, les 

 2 mm. thick. 



On dead leaves in moist woods, (lien Ellyn. S 

 Pileus 8 to 12 mm. broad, hyaline when young, whitish or fus< 

 white when older; hygrophanous. Stem smooth, pellucid, 

 fragile, white or pale watery-brown, sometime- crooked I 

 position. 



