190 NORTH AMERICAN FLORA [Vo.ume 10 
Wisconsin by Bundy. Peck remarks that his P. expansus is probably a form of P. aleuriatus 
but the specimens I have seen do not suggest Fries’ figures, which are small, with short, white 
stipe. 
Pluteolus reticulatus (Pers.) Gill. Champ. Fr. 549. 1876. (Agaricus reticulatus Pers. Ie, 
Descr. Fung. 13. 1798.) Reported from New York by Peck rather doubtfully and from 
Michigan by Kauffman. The small specimens mentioned by Peck were not found at Albany. 
69. MYCENA (Pers.) Roussel, Fl. Calvados ed. 2. 64. 1806. 
Agaricus § Mycena Pers. Syn. Fung. 375. 1801. 
Bolbitius Fries, Epicr. Myc. 253. 1838. 
Pileus fleshy or submembranous, putrescent; lamellae free or attached, deliquescent; 
spores ochraceous, ferruginous, or fulvous; stipe central, slender, tubular, cartilaginous; veil 
none. 
Type species, Bolbitius conocephalus (Fries) Gill. 
I. SPECIES OCCURRING IN TEMPERATE NortH AMERICA, EXCEPT THOSE CONFINED TO THE 
PaciIFIc coast 
Pileus snow-white when young, sordid when old. 1, M. sordida. 
Pileus white, yellowish or tawny on the disk. 2. M. Glatfelteri. 
Pileus cinereous, yellowish on the disk. 3. M. pulchrifolia. 
Pileus pale-yellow, reddish on the disk. 4. M. nobilis. 
Pileus blue, green, or olivaceous, with other tints. 
Lamellae long-decurrent. 5. M. macrorrhiza. 
Lamellae adnexed or adnate. 
Pileus bluish-green to bright-brown; spores flavous, 8-10 » long. 6. M. gloiocyanea. 
Pileus yellow or smoky-olive; spores ferruginous, 10-15 yu long. 7. M. variicolor 
II. SPECIES CONFINED TO THE PaciFIc COAST 
Pileus yellow, 4-7 cm. broad. 8. M. flava. 
TII. SPEcIES CONFINED TO TROPICAL NORTH AMERICA 
Pileus flavo-melleous or sulfur-yellow, fulvous on the disk. 
Stipe glabrous. 9. M. jalapensis 
Stipe villose. : 10. M, villipes. 
Pileus avellaneous, brownish on the disk. 
Pileus 12 mm. broad; stipe 6 cm. long. 11. M. brunneidisca, 
Pileus 2 em. broad; stipe 2-4 cm. long. 12. M. mexicana. 
1. Mycena sordida (C. G. Lloyd) Murrill. 
Bolbitius sordidus C. G. Lloyd, Mye. Notes 18. 1899. 
Pileus ovoid when young, explanate when mature, thin, gregarious, 3-4 cm. broad ; surface 
pure-snow-white when young, sordid when old, glutinous, hygrophanous, margin smooth and 
even when young, plicate-sulcate and ragged when old; lamellae ovate, free, firm and white 
when young, becoming cinnamon-colored, moist and flaccid when old; spores ovoid, 9 X 6 BS 
stipe pure-white, scurfy, hollow; 5 cm. long, 5 mm. thick. 
Type Locarity: Cincinnati, Ohio. 
Hasirat: On rotten shavings used for horse bedding. 
DISTRIBUTION: Known only from the type locality. 
2. Mycena Glatfelteri (Peck) Murrill. 
Bolbitius Glatfelteri Peck, Bull. Torrey Club 30: 97. 1903, 
Pileus thin, conic or subcampanulate, soon expanding with the margin curving upward, 
sometimes umbonate, 2-3 cm. broad; surface glabrous, very viscid, white, yellowish or tawny 
at the center, margin widely striate; lamellae crowded, rather narrow, subventricose, free, 
pallid, becoming ferruginous and pulverulent; spores 12-16 X 8-10 #; stipe equal or slightly 
tapering upward, hollow, slightly striate at the apex, slightly squamulose or furfuraceous 
when young, becoming glabrous and shining, pure-white, 5-10 cm. Jong, 4-5 mm. thick. 
TYPE LOCALITY: Missouri. 
HasiTat: On rotted manure. 
DISTRIBUTION: Missouri and Illinois, 
