MYCOLOGICAL NOTES. 
BY O. O. LLOYD, 
No. 5. 
CINCINNATI, 0. DECEMBER, 1900. 
86—OOLLYBIAS OF CINCINNATI. 
The essential character of the genus Collybia are white spores, 
cartilaginous stem, convex-explanate pileus, and margin of the pileus 
incurved when young. It is a common genus and every collector will 
meet a number of species. It is also one of the easiest genera we have 
to work with, and I have never experienced the trouble I have met 
with the allied genera Clitocybe and Tricholoma. Most of the species 
of which the common dryophila is a type, are readily recognizable by 
the strongly cartilaginous stem and convex-explanate pileus. C. platy- 
phvlla, also a common species with a fleshy stem (of which the cuticle 
is said to be cartilaginous), is more apt to be looked for in the Trieho- 
lomas. C. stipitaria, a little species with setiform stem and pileus not 
putrescent but reviving under the influence of moisture, would probably 
be looked for in Marasmius, but C. confluens with its tough reviving 
pileus, I take to be a much better Marasmius. Although a common 
plant here, I did not locate it for several years, for I did not think to 
look for it elsewhere than in Marasmius. 
Fries divides the genus primarily by the color of the gills, viz:— 
Gills white or bright colored. 
Gills cinereous. 
We have met but one species belonging to the .second section. 
Prof. Peck, in his excellent monograph of the New York species, 
introduces the character of hygrophanous pilei, but as he places such 
species as dryophila and butyracea among the non-hygrophanous 
species (whereas we would consider them hygrophanous), we think it 
better to disregard the division and simply divide the species by the 
purely artificial character of the nature of the stem, which is very evi¬ 
dent in all the species we have met. 
Striaepedes. Stem stout, grooved or striate. 
Laevipedes. Stem slender, ecpial, even, glabrous (the base ex¬ 
cepted) . 
Vestipedes. Stem slender, equal, velutinate, tomentose, floc- 
cose or pruinose. 
literature. 
Fries’ Epicrisis, p. 109. Stevenson, Yol. 1, p. 96. Peck’s 
Monograph of New York Species, 49th Report. The last a most useful 
work for the American student. 
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