28 Journal OF THE Mitchell Society [Odoher 



1, Gills and margin of cap usually resolving into an inky fluid; if not, 

 then the cap very thin and splitting or curling back- 

 wards Coprinus 



1. Gills or cap not as above ^ 



2. Ring present Anelaria 



2. Ring absent ^ 



3. Gills distinctly decurrent GompMclms 



3. Gills not decuri'ent 4 



4. Cap membranous, its margin distinctly striate, at least when 



moist Psathyrella 



4. Cap somewhat fleshy; margin not distinctly furrowed Panceolus 



EOMYCENELLA 



This genus lias been proposed by Dr. Atkinson to contain a won- 

 derfully delicate little plant found by him at Blowing Eock, N. C. 

 His description follows: Atkinson (Bot. Gaz. 34: 37. 1902). 



"Plants stipitate. Pileus companulate to expanded, consisting 

 of a layer of radiating branched threads forming a more or less lat- 

 tice-like or trabecular, expanded, thin structure; trama wanting or 

 very rudimentary the subhymenium arising directly from the trabe- 

 culse of the pileus. Hymenium plane, or in larger forms with a few 

 short, narrow, distant lamellse not reaching the stipe; lamelte with 

 "rudimentary trama. Basidia clavate, 4-spored. Spores smooth, 1- 

 celled, hyaline. Stipe fleshy, delicate. At maturity hymenium dis- 

 solving, leaving many of the spores lying on an amorphous layer 

 against the trabeculae. 



One species, on decaying leaves of Rhododendron maximum^ Blow- 

 ing Eock, IT. C." 



Eomycenella Echinocephala Atk. 



This minute plant is included here because it is known only from 

 iSTorth Carolina and because of its scientific interest to the student 

 of mycology. The following description is also by Dr. Atkinson. 



"Plants white, 3-8 mm. high. Pileus 0.5-0.75 mm. broad. Stipe 

 60-80/x in diameter. Plants campanulate to expanded and upturned 

 in age, trabecule of upper surface echinulate, bearing here and there 

 globose free branches, 10-15]^ in diameter and also echinlate, margin 

 of pileus with free clavate branches in the form of a fringe. Cells of 

 the trabecul^e 25-30 x 6-10/*. Hymenium plane or with few short, 

 narrow gills. Gills when present narrowed at each end, not reaching 



