No. 5, 
Collybia fuliginella, 
(natural size.) 
been one. I would refer it to alealinolens if any note 
had been made of the strong striatulations (almost 
grooves) on the stem, as shown in our photograph, 
which are the Jeatures of the plant. It is evidently a 
rare plant here as I have seen it but once. The plant 
grew in rich leaf mould. Our photograph is strongly 
characteristic and cannot be confused with anything 
else, and if it has been described will enable future 
workers to decide without question the plant under 
consideration. The hygrophanous pileus shows well 
in our photograph, though not in the plant figured. 
90—COLLYBIA FULIGINELLA. 
Pileus explanate, smooth, even, fuliginous color, 
with a small umbilicate depression in the disk. Gills 
adnexed, .slightly decurrent, narrow, light smoky 
color. Stem equal, or tapering up, concolorous 
with the pileus, striate, stuffed or hollow, white 
myceloid tomentose at base. 
A few plants were found growing among some chips in the 
woods. The gills were not “white” and not “nearly free,” but the 
plant agreed with the description in all other respects and on account 
off its peculiar sooty color I have no doubt of its determination. 
Fig. 6. 
Colly bia butyracea, (natural size.) 
91—COLLYBIA BUTYRACEA. 
Pileus convex then expanded, even, 
smooth, rufous brown becoming pale. 
Flesh somewhat hygrophanous, dingy 
white when moist, white when dry. 
Gills narrow, close, white, adnexed or 
almost free. Stem rigid, tapering up¬ 
ward, striate, reddish-brown, usually 
white myceloid tomentose at base. 
This plant is rather rare, growing in 
rich leaf mould, sometimes on rotten 
logs. The pileus and gills are very 
similar in shape and color to dryophila, 
but the plant differs entirely in its stem. 
I have, however, received alcoholic 
specimens from a very good collector 
labeled “dryophila,” which shows that 
it is liable to be confused. 
86 
