150 NORTH AMERICAN FLORA [VorumEe 10 
4. Crepidotus applanatus (Pers.) Gill. Champ. Fr. 557. 1876. 
Agaricus applanatus Pers. Obs. Myc. 1: 8. 1796. 
Pileus very thin, variable in shape, suborbicular, reniform, cuneiform, or spathulate, 
plane or convex, sometimes slightly depressed behind, sessile or prolonged behind into a 
short, compressed, white-tomentose, stipe-like base, gregarious, 1.2-2.5 cm. long, 0.8-2 cm. 
broad; surface glabrous, hygrophanous, watery-white and striatulate on the margin when 
moist, white when dry; lamellae very narrow, linear, crowded, decurrent, white, becoming 
cinnamon; spores globose, 5—6.2 yu. 
TYPE LOcaLity: Europe. 
Hasrrat: On old stumps and much decayed wood. : 
DistrrBuTion: Eastern temperate North America; also in Europe. 
5. Crepidotus hygrophanus Murrill, sp. nov. 
Pileus soft, fleshy, narrowly sessile, dimidiate, convex-plane, attached by a white tuft 
of mycelium, gregarious, 1-2 em. broad; surface whitish, hygrophanous, becoming nearly 
fulvous on drying, glabrous, minutely striate over the lamellae, the margin darker, more 
glabrous and more conspicuously striate in dried specimens; context mild to the taste; lamellae 
broad, not crowded, thin, entire; spores globose, smooth, pale-yellow under the microscope, 
usually uniguttulate, 5-6 yu. 
Type collected on a rotten beech log at Lake Placid, Adirondack Mountains, New York, July 
17-29, 1912, W. A. & Edna L. Murrill 236, 
DistRIBUTION: Known only from the type locality. 
6. Crepidotus haerens (Peck) Sacc. Syll. Fung. 5: 880. 1887. 
Agaricus haerens Peck, Ann. Rep. N. Y. State Mus. 35: 132. 1884. 
Pileus thin, convex, sessile, cuneiform or dimidiate, 8-24 mm. broad; surface glabrous 
or slightly squamulose, hygrophanous, watery-white or gray when moist, white or whitish 
when dry, margin striatulate when moist; lamellae moderately crowded, narrow, tapering 
toward each end, subcinereous, becoming brownish; spores ellipsoid, pale-ferruginous, 7.5 X 5 nu. 
Type Locatity: Albany, New York. 
Hagitrat: On decaying wood. 
DIistRIsuTION: New York and Indiana. 
7. Crepidotus fraxinicola Murrill, sp. nov. 
Pileus reniform, convex to subexpanded, not at first resupinate, rather thin, gregarious, 
1-2 cm. broad; surface hygrophanous, dirty-white, at first fibrillose, becoming glabrous, 
except at the strigose-tomentose base; lamellae rather narrow, crowded, several times inserted, 
white to isabelline, subentire and whitish on the edges; spores ellipsoid, smooth, pale-yellow 
under the microscope, 7-8 X 3-5 u. : 
Type collected on a dead ash trunk, the hymenophores emerging from cracks in the bark, at 
West Park, New York, July 24, 1903, F. S. Earle 1507 (herb. N. Y. Bot. Gard.). 
DistRIBUTION: Known only from the type locality. 
8. Crepidotus alabamensis Murrill, sp. nov. 
Pileus reniform, convex, not expanding, narrowly attached, gregarious, 1-1.5 em. broad; 
surface smooth, glabrous, strigose behind, whitish, much wrinkled on drying, margin entire, 
concolorous, not striate; context white, rather tough, not readily decaying; lamellae thin, 
narrow, crowded, pale-isabelline, becoming darker at maturity, entire and concolorous on the 
edges; spores ellipsoid, pale-yellow under the microscope, smooth, 7-8 X 4 x. 
Type collected on persimmon bark at Palmetto Swamp, near Auburn, Alabama, September 1, 
1899, F. S. Earle (herb. N. Y. Bot. Gard.). 
DistRipvurion: Known only from the type locality. 
9. Crepidotus versutus (Peck) Sacc. Syll. Fung. 5: 888. 1887. 
Agaricus chimonophilus Peck, Ann. Rep. N. Y, State Mus. 27: 96. 1875. Not A. chimonophilus 
Berk. & Br. 1854. 
Agaricus versutus Peck, Ann. Rep. N. Y. State Mus. 30: 70. 1878. 
Pileus at first resupinate, becoming reflexed, reniform, or dimidiate, sessile, 0.8-2 cm. 
broad; surface clothed with a soft, downy or tomentose villosity, white, margin incurved; 
