No. 104.] 69 
Claudopus byssisedus, /7. 
Fibril-attached Agaric. Little Claudopus. 
Agaricus byssisedus, Pers. 
Pileus very thin, four to ten lines broad, at first resupinate, then 
reflexed, nearly plane, glabrous or merely pruinose with a slight gray- 
ish villosity, gray, grayish-brown or brown; lamelle rather broad, 
subdecurrent, grayish, then tinged with pink; stem short, lateral or 
eccentric, generally curved, with white radiating byssoid fibrils at the 
base; spores angulated, .0004 to .00045 in. long, .0003 broad, 
Decaying wood. Sterling and Adirondack mountains. August 
and September. 
CREPIDOTUS, Fr. y 
Veil wanting or not manifest. Pileus eccentric, lateral or resupi- 
nate. Spores ferruginous. 
The Crepidoti correspond in shape and habit to the smaller Pleuroti 
and the Claudopodes, but they are distinguished from both by the 
ferruginous color of their spores. These are globose in several species, 
in others they are elliptical. In some there is a depression on one 
side which gives them a naviculoid character and causes the spore to 
appear slighly curved when viewed in acertain position. In conse- 
quence of the similarity of several of our species, the character of the 
spores is of much importance in their identification, and it is unfortu- 
nate that European mycologists have so generally neglected to give 
the spore characters in their descriptions of these fungi. In most of 
the species the pileus is at first resupinate, but it generally becomes 
reflexed as it enlarges. It is generally sessile or attached by a mass of 
white fibrils or tomentum. For this reason it is usually somewhat 
tomentose or villose about the point of attachment, even in species 
that are otherwise glabrous. In several species the pileus is moist or 
hygrophanous and then the thin margin is commonly striatulate. 
This character is attributed to but one of the dozen or more European 
species. The large number of New York species is noticeable, and fu- 
ture investigation may show that mere varieties have in some instances 
been taken for species. Their mode of growth is usually gregarious 
or somewhat loosely imbricated, in consequence of which the pileus, 
which in most species is white or yellowish, is often stained by the 
spores, and then it has a rusty, stained or squalid appearance. The 
Species occur especially on old stumps, prostrate trunks and _ soft 
much-decayed wood in damp, shaded places. The name Crepidotus is 
derived from-two Greek words xpezzs, a shoe or slipper, and ovs, an 
ear. 
Synopsis of the Species. 
BNESTISEVISCIC AWwhenlmMOISteays sii). os letg els vans Mee Siothh slee ats Brest Pl «20 C, herens. 
Bplens not viscid... 4e. + seas Bu cVataiaed ates ap Meyoteph iar seerators SjeisvavctelenWeaeporetorrs a 1 
ee EAeaIsmunitne dt QIShIMGh SLEMI. . . 5. ccthccs ours les cs och aebieo a cieyetavere eholssarel ote levee 2 
1. Pileus sessile or with an indistinct stem........ ....... SAI OIG Dies beeen 3 
2. Stem thickened at the base......... a arageh aa lexaieyatiay meade » «ee OC. haustellaris. 
2. Stem not thickened at the base.................. wsseeeeee. CO. tiliophilus. 
3. Pileus glabrous or only slightly villose at the base.............e.002.-5. 4 
Se twleusnot glabrous. «sis! /./)2. 3 31 PL AtaE ERR OIE Hos Bbicigcddbuodecoos some 
4, Lamelle narrow and decurrent ..........5..0-...ee 000000 C. applanatus. 
- 2 
A-slamelilc: broads not decurretitys crc sje 6 oi.icve deeb bb a clot ae. eee sede 
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