199 



ally containing a shining nucleus and furnished with a slight 

 apiculus at one end. 



Pileus i to 1. 5 in. broad; stem 2 to 3 in. long, 1 to 1.5 line 

 thick. 



Plant fragile, growing among fallen leaves in woods. Pasa- 

 dena, California. January. Prof. A. J. McClatchie. 



From L. illinita Fr. this species is separated by its tawny disk 

 of the pileus, its membranous annulus, the bulbous base of the 

 stem and the different shape of the spores. 



Clitocybe pusilla. Pileus at first hemispherical or convex, 

 then nearly plane, obtuse, sometimes with a very small umbo, dry, 

 pruinose, grayish, flesh thin, whitish ; lamellae narrow, close, ad- 

 nate or decurrent, white ; stem short, solid, pruinose, grayish ; 

 spores subglobose or very broadly elliptical, .00016 to .0002 in. 

 long. 



Pileus 3 to 8 lines broad ; stem about 6 lines long, scarcely I 

 line thick.- 



Densely gregarious or subcaespitose. On manure. Pasadena. 

 February. McClatchie. 



Apparently belonging to the tribe Disciformes and related to 

 C. Brcsadolac Schulz, but an exceedingly small plant for that tribe. 



Collybia albogrisea. Pileus fleshy, thin, convex or nearly 

 plane, often somewhat irregular on the margin, glabrous, whitish 

 or grayish, flesh white ; lamellae broad, distant, adnate, white or 

 whitish, the interspaces often venose ; stem nearly equal, hollow, 

 sometimes twisted, whitish or grayish, the lower part covered with 

 a dense whitish, grayish or yellowish tomentum, the upper part 

 naked or merely white-pruinose ; spores broadly elliptical, .0002 to 

 .00024 in. long, .00016 broad, generally containing a single shin- 

 ing nucleus. 



Pileus about I in. broad; stem 1.5 to 2 in. long, 1 to 2 lines 

 thick. 



Plant often caespitose and then the pileus irregular from mu- 

 tual pressure. Among fallen leaves. Pasadena. January. Mc- 

 Clatchie. 



The species belongs to the tribe Vestipedes. 



Mycena elegantula. Pileus membranous, conical or cam- 

 panulate, sulcate-striate, brown or purplish-brown ; lamellae distant, 

 adnate with a decurrent tooth, whitish or pallid with the edge 

 purplish-brown, the interspaces (in the dried specimens) venose or 

 transversely wrinkled ; stem slender, hollow, glabrous, sometimes 



