180 NORTH AMERICAN FLORA [VoLumE 10 
38. Naucoria mammillata Murrill, sp. nov. 
Pileus conic to campanulate, not expanding, prominently umbonate, gregarious, 1-1.3 
cm. broad; surface smooth, glabrous, dark-isabelline, stramineous on and near the umbo, the 
stramineous area becoming more extensive on drying, margin entire, dark-isabelline, bay and 
sharply inflexed in dried specimens; lamellae adnate, broad, subdistant, isabelline to fulvous, 
pallid and entire on the edges; spores oblong-ellipsoid, smooth, melleous under the microscope, 
mostly uniguttulate, 7 X 3-4 u; stipe cylindric, equal, smooth, glabrous, cartilaginous, fulvous 
above, bay below, about 3.5 cm. long, 1-2 mm. thick. 
Type collected on fallen, much decayed wood in woods at Seattle, Washington, October 20- 
November 1, 1911, W. A. Murrill 694 (herb. N. Y. Bot. Gard.). 
DISTRIBUTION: Known only from the type locality. 
39. Naucoria caespitosa Murrill, sp. nov. 
Pileus rather thin, convex to plane, slightly umbonate at times, cespitose or gregarious, 
about 2 cm. broad; surface subviscid, smooth, glabrous, uniformly cream-colored or pale-isa- 
belline, margin entire, not striate, involute when young, decorated with the remains of a slight, 
evanescent, fibrillose veil; lamellae adnexed or sinuate, narrow, crowded, yellowish to dark- 
melleous, entire and concolorous on the edges; spores ellipsoid, smooth, melleous under the 
microscope, 1—2-guttulate, 7~8.5 X 64; stipe short, cylindric, equal, cartilaginous, cream- 
colored, slightly darker at the base, fibrillose from the remains of the veil, 1-1.5 cm. long, 
about 2 mm. thick. 
Type collected on a dead, coniferous, moss-covered log in woods near Seattle, Washington, 
October 20-November 1, 1911, W. A. Murrill 691 (herb. N. Y. Bot. Gard.). 
Hasirat: On coniferous logs. 
DISTRIBUTION: Vicinity of Seattle, Washington. 
40. Naucoria brunneimarginata Murrill, sp. nov. 
Pileus thin, campanulate to subexpanded, gibbous, scattered, 1.5-2.5 cm. broad; surface 
smooth, glabrous, pale-yellowish-gray or dark-cream-colored, margin entire, not striate, 
incurved when young, marked with a brownish zone; context cream-colored, without charac- 
teristic taste or odor; lamellae sinuate, narrow, rather distant, yellowish, soon colored by 
the spores, entire and concolorous on the edges; spores ovoid, smooth, melleous under the 
microscope, 8-9 X 5-64; stipe cylindric, equal, slender, smooth, glabrous, cartilaginous, 
hollow, cream-colored, 3-5 cm. long, 1-2 mm. thick. 
Type collected among leaves and grass in rich soil under trees at Madera Creek, Stanford 
University, California, December 21, 1902, James McMurphy 52 (herb. N. Y. Bot. Gard.). 
DIsTRIBUTION: Vicinity of Stanford University, California. 
41. Naucoria Harperi Murrill, sp. nov. 
Pileus convex to plane, thin, gregarious, 2-2.5 cm. broad; surface hygrophanous, glabrous, 
uniformly leather-colored, margin entire, concolorous, striate, not projecting and not inflexed 
on drying; lamellae adnate, distant, ventricose, not very broad, ferruginous, entire and con- 
colorous on the edges; spores ellipsoid, smooth, apiculate, pale-melleous under the microscope, 
7-8 X 4-5 »; stipe rather slender, equal or tapering upward, concolorous, glabrous above, 
whitish-floccose below, 3-4 cm. long, 2-3 mm. thick. 
Type collected on a lawn at Berkeley, California, March 8, 1911, R. A. Harper 64 (herb. N. Y. 
Bot. Gard.). 
DISTRIBUTION: Known only from the type locality. 
42, Naucoria Pattersonae Murrill, sp. nov. 
Pileus convex to expanded, not umbonate, solitary, 3-3.5 cm. broad; surface smooth, 
glabrous, creamy-white to dull-yellow, margin entire, concolorous, not striate; context cream- 
colored, with nutty taste and odor; lamellae slightly sinuate, broad, somewhat ventricose, 
subdistant, cream-colored, whitish and serrulate on the edges; spores oblong-ellipsoid, slightly 
curved at times, smooth, pale-yellow under the microscope, 7-8 X 4-5 yu; stipe cylindric, 
