192 NORTH AMERICAN FLORA [Volume 10 
8. Mycena flava Murrill, sp. nov. 
Pileus very fragile, conic to fully expanded, broadly umbonate, cespitose, 4-7 cm. broad; 
surface viscid, usually glabrous, bright-lemon-yellow to pale-sordid-yellow, margin entire, 
concolorous; context pale-lemon-yellow, without characteristic taste or odor; lamellae free, 
broad, crowded, ventricose, pale-brown or fulvous at maturity; spores ellipsoid, 14 X 8 y; 
stipe somewhat tapering upward, white, hollow, glabrous above, fibrous-shaggy below, 6-10 
cm. long, 8-12 mm. thick. 
Type collected on decayed horse manure in an old pasture at Stanford University, California, 
November 30, 1901, C. F. Baker 161 (herb. N. Y. Bot. Gard.). 
DISTRIBUTION: Vicinity of Stanford University, California. 
9. Mycena jalapensis Murrill, Mycologia 4: 73. 1912. 
Pluteolus tropicalis Murrill, Mycologia 4: 74. 1912. 
Bolbitius jalapensis Murrill, Mycologia 4: 332, 1912. 
Pileus conic to expanded, thin, umbonate, gregarious, 2-5 cm. broad; surface viscid, 
striate, flavo-melleous, fulvous on the umbo; lamellae free, narrow, crowded, becoming fer- 
ruginous, at length deliquescent; spores ellipsoid or ovoid, smooth, flavo-luteous under a 
microscope, 12-14 X 6-8 yw; stipe cylindric, equal, hollow, glabrous, white or sulfureous, 
6-8 cm. long, 2-4 mm. thick. 
TYPE LOCALITY: Jalapa, Vera Cruz, Mexico. 
Hasirat: Among chips in woods or on rotting grass in fields. 
DISTRIBUTION: Mexico, Cuba, and Grenada. 
10. Mycena villipes (Fries) Murrill, Mycologia 4: 73. 1912. 
Bolbitius villipes Fries, Nova Acta Soc. Sci. Upsal, III. 1: 28. 1851. 
Pileus submembranous, convex to expanded, 4 cm. broad; surface shining, sulfur-yellow, 
the disk fulvous, smooth, margin sulcate, radiate-striate; lamellae yellow; stipe equal, hollow, 
pilose-villose, darker than the pileus, helvolous, 5 cm. long, 2 mm. thick. 
Type LOCALITY: Naranjo, Costa Rica, 
Hasrrat: On manured ground. 
DisTRIBUTION: Known only from the type locality. 
11. Mycena brunneidisca Murrill, sp. nov. 
Pileus small, convex to expanded and at length somewhat depressed, not umbonate, 
gregarious, 12 mm. broad; surface smooth, glabrous, not striate, brownish-isabelline, brown 
or fuliginous on the disk, margin entire, concolorous; lamellae adnexed or adnate, crowded, 
rather broad, ferruginous, entire and concolorous on the edges; spores ellipsoid, smooth, 
ferruginous, 8-9 X 5-7 »; stipe slender, somewhat bulbous, smooth, glabrous, white, 6 cm. 
long, 1-2 mm. thick. 
Type collected on the ground in rich soil between Port Antonio and Manchi 1 i 
December 17, 1908, W. A. Murrill 223 (herb. N. Y. Bot. Gard.). aaa 
DISTRIBUTION: Known only from the type locality. 
12. Mycena mexicana Murrill, Mycologia 4: 73. 1912. 
Bolbitius mexicanus Murrill, Mycologia 4: 332. 1912. 
Pileus subcespitose, conic to expanded, umbonate, about 2 cm. broad; surface striate, 
avellaneous, fuliginous on the umbo, subglabrous, dry; lamellae adnexed, rather broad, be- 
coming ferruginous and at length slightly deliquescent; spores ovoid, smooth, ochroleucous 
under a microscope, usually uninucleate, 8-9 X 4.5-5 4; stipe slender, white, glabrous, cylin- 
dric, equal, hollow, 3-4 cm. long, 1 mm. thick. 
TYPE LOCALITY: Xuchiles, near Cordoba, Vera Cruz, Mexico. 
Hasitat: On decayed wood in coffee plantations, 
DisTRIBUTION: Known only from the type locality. 
DoUBTFUL AND EXCLUDED SPECIES 
Bolbitius conocephalus (Bull.) Gill. Champ. Fr. 595. 1878. (Agaricus conocephalus Bull. 
Herb. Fr. pl. 563, f. 1; hyponym. 1791; Pers. Syn. Fung. 427. 1801.) Reported from North 
Carolina and California, but perhaps confused with species of Galerula. 
