Saprophytic Fungi of Eastern Iowa. 195 



attached, white, then pinkish, at length black; stipe hollow, 

 equal, fragile, white and villous. Annulus none. 



Height 3 '-4'. Pileus I'-iy^' . Spores .oiox.014 mm. 



Common about stables, especially after summer showers. 

 Very pretty and delicate, the margin soon revolute. 



4. CoPRiNus micaceus, F'r. 



Pileus ochraceous or brown, membranaceous, ovate, then 

 campanulate, repand, striate, rimose, sprinkled with minute 

 glittering particles, but soon entirely nude; lamella? adnate, 

 lanceolate, crowded, white, at length black; stipe hollow, 

 silky, smooth, white, easily spHtting. 



Height 2 '-6'. Pileus y^'-i'. Spores apiculate, .006 x 

 .008 mm. 



Very common the year through at the base of stumps and 

 on the ground in dense ccespitose masses. Like No. 2, but 

 much smaller and more delicate every way. Has no annulus 

 and no scales. The shining particles, except in 3'oung speci- 

 mens, can rarely be detected by the unaided eye. 



b. I "'elifonncs. 



5. COPRINUS NYCTHEMERUS, Fv. 



Pileus ashy white, the disk yellowish, very thin and deli- 

 cate, at first conic -cylindric, soon sphtting and expanded, 

 radiato-pUcate; lamellce free, narrow, few, vanishing to mere 

 black lines; stipe very slender, hollow, white. 



Height y^'-i%' or more. Pileus about ^' or less. 



Everywhere on manured land, lawns, etc., from May to 

 September. 



6. COPRINUS PLICATILIS, Fr. 



Pileus pale, very thin, at first conic-campanulate, then ex- 

 panded, sulcate-striate, the disk smooth, brownish, depressed; 

 lamella adnate to the expanded top of the stipe, as if attached to 

 a collar, narrow, remote; stipe slender, fragile, smooth, hollow. 



On the moist earth on lawns, fields, woodlands, very short- 

 lived, evanescent. 



