The Mycologic Flora of the Miami Valley, 0. 177 



»plants. Pileiis ^ of an inch or less in breadth, stipe 1-3 in. high. One 

 of the most tender, fugacious, with a flaccid habit. 



b. LamellcB attached to the stipe or to a distinct collar. 



13. C. PLiCATiLis, Curt. — Pileus very tender, oval-cjdindric then 

 carapanulate, soon expanded and splitting, sulcate plicate, nearl}' 

 glabrous, brown then lavender-cinereous; the disk broad, even, at 

 length depressed, darker. Lamellae attached to a collar remote from 

 the stipe, gra^'-blackish. 



On the moist earth along paths in fields and woods. Pileus ^-1 in. 

 broad, the stipe 1-3 in. high. Extremely fugacious; disappearing with 

 the rising sun; pileus at length plane, nearly naked, umbilicate, gray, 

 3'^ellowish-brown in the center; stipe very slender, fragile, smooth, gray, 

 tinged with brown, sometimes white, hollow. 



Genus III. — Bolbitius, Fr. 



Hymenophore somewhat discrete; lamellae membranaceous, soft, 

 liquescent, pulverulent from the seceding spores. Spores ovate, even, 

 somewhat ferruginous. 



1. B. TiTUBANS, Bull. — Pileus membranaceous, ovate-campanulate, 

 afterwai'd split and explanate, yellow, discoid. Stipe slender, straight, 

 yellowish, shining. Lamellae slightly attached, pallid then becoming 

 purplish or fleshy-brown. Spores salmon-color, elliptic, .008X-00^ vaui. 



On manure in woodlands. Pileus 1-2 in. in diameter, stipe 3-5 in. 

 long. Pileus very delicate and tender at length almost deliquescent. 

 This is the only species that has 3'et been found in our region; I found 

 it in July, 1882, and have the figure of the only specimen. 



GeNCS IV. CORTINARIDS, Fr. 



Veil cobwebby, discrete from the cuticle of the pileus, superficial. 

 Hymenophore contiguous with the stipe; lamellae persistent dr}', 

 changing color, pulverulent from the slowly seceding spores; trama 

 fibrillose. Spores on white paper somewhat ochraceous. 



Fungi terrestrial, putrescent, growing in woods. 



Note. — The individuals as well as the species of this vast genus are 

 extremely limited in number in the Miami Valley. I have been able to 

 make scarcely any additions to the very few species enumerated by 

 Mr. Lea. I have figures of a few species as yet undetermined. Speci- 

 mens are so scarce that it is difficult to meet with the different stages 

 of growth. 



