220 
THIRTEENTH REPORT. 
. Xolanea nodospora Atk. Low ground, mixed woods. Allegan Co., 
Sept., fide C. H. K. 
Omphalia onisca. Fr. Ground of clay ravines under hemlock, etc. 
Allegan Co., Sept. 25, tide C. H. K. 
Pholiota curvipoda A. & S. On elm log. AVaslit. Co., June G, tide 
C. H. K. 
Pleurotus candidissimus B. & C. On wood. Allegan Co., Sept. 10, 
fide C. H. K. 
Psathyrella crenata Fr. On grassy ground. 
Allegan 
Co., Sept. 
09 
fide C. H. K. 
Psilocybe murcida Fr. Low, wet places in woods, among grass, etc. 
AVaslit. and Allegan Co.. June-Sept., fide C. 11. K. 
Stropharia epimyces (Pk.) Atk. Parasitic on Coprinus atramentarius 
and C. comatus. Port Huron, St. Clair Co, fide C. Id. Iv. 
Stropharia melasperma (Bull.) Fr. In pastured woods of white pine, 
beech, etc., on the ground. Allegan Co., Sept. 22, fide C. H. K. 
Tricholoma panoeolum Fr. yar. caespitosum Bres. On the ground in 
woods. AVaslit. Co., etc., fide Atk. A very confusing species, and 
easily taken for a Clitocybe; its spores are slightly flesh tinted. 
Tubaria canescens Pk. Grassy places in woods. Allegan Co., Sept. 
26, fide C. H. K. 
ADDITIONAL NOTES ON THE GENUS RUSSULA. 
Russula dexsifolia Seer. 
A fine and typical specimen of this species was found in October at 
Ann Arbor, among grass in an oak woodlot. The flesh was whitish to 
grayish slowly changing to dull red when bruised, then becoming black. 
The gills were crowded even after the pileus was fully mature, relatively 
narrow. The pileus was up to 12 cm. broad, viscid, buff-colored, clouded 
with pale smoky brown when fresh. Taste tardily acrid, at length quite 
strong. Odor none. I am convinced that this species is quite distinct 
as Russulas go. Its taste separates it from R. cidusta, its lack of odor 
from R. compact a and its gills and red stains from R. nigricans. The 
spores are spherical, tuberculate. 8-0 micr. diam., short apiculate, white 
in mass. 
Russula bkevipes Pk. 
This seems to be merely an ecological variety of R. delica. Many 
specimens were found at New Richmond in a white pine and oak wood- 
lot. pushing thru the hard, clay soil. It is smaller and the gills are 
close, but in every other respect it showed all the characters of R. delica. 
Conditions of weather and soil are no doubt responsible for this form. 
The typical R. delica delights to grow in sandy soil. 
Russula decoloraxs Fr. Yar. 
rubriceps Var. Nov. 
The shape of the young and old pileus is well represented in Cooke’s 
figure of R. decolorants, Plate 1070. The color of the pileus is, however, 
ruber-red (Sacc. colors) and persistent, changing only in age or on dry- 
