Part 2, 1917] AGARICACEAE 101 
21. Nolanea dysthales (Peck) Murrill. 
Agaricus dysthales Peck, Ann. Rep. N. Y. State Mus. 32: 28. 1880. 
Entoloma dysthales Sacc. Syll. Fung. 9: 85. 1891. 
Pileus thin, submembranous, subconic, becoming convex or expanded, obtuse, 6-12 mm. 
broad; surface furfuraceous or squamulose, striate, brown, becoming paler with age; lamellae 
broad, subdistant, ventricose, brown or grayish-brown, becoming flesh-colored; spores irregular, 
oblong-ellipsoid, usually uninucleate, 15-16 X 7.5~8 y; stipe slender, equal, hollow, squamulose, 
brownish, 2.5—-3.5 cm. long, about 2 mm. thick. 
TYPE LOCALITY: Catskill Mountains, New York. 
Haprrat: On damp ground in woods. 
DISTRIBUTION: Known only from the type locality. 
22. Nolanea nodospora Atk. Jour. Myc. 8: 114. 1902. 
Pileus campanulate, 1-1.5 em. broad; surface very scaly with squarrose scales, dark-brown; 
context brown; lamellae ascending, ventricose, becoming adnate, concolorous; spores elongate 
or nodulose-elongate, pale-pink, 12-18 X 6-9 u; stipe concolorous below, paler above, very 
hairy, becoming fistulose, slightly enlarged at the base, 6-7 cm. long, 1.5—2.5 mm. thick. 
Typez LocaLity: Six Mile Creek, Ithaca, New York. 
Hasirat: On the ground in woods. 
DISTRIBUTION: Known only from the type locality. 
23. Nolanea subpicea Murrill, sp. nov. 
Nolanea picea Peck, Ann. Rep. N. Y. State Mus. 50: 102. 1897. Not N. picea Sace. 1887, 
Pileus thin, varying from broadly conic to convex or nearly plane, often irregular from 
its crowded or cespitose mode of growth, 3-5 cm. broad; surface smooth, covered with a grayish 
pruinosity, hygrophanous, blackish when moist, becoming grayish-brown to black when dry, 
margin thin, even, at first incurved and slightly tinged with red, projecting; context having a 
fishy odor; lamellae rather crowded, rounded behind, slightly adnexed, often becoming ventri- 
cose with the expansion of the pileus, more or less serrate on the edges, whitish, becoming 
flesh-colored; spores narrowly ellipsoid, 7.5-10 X 5 4; stipe equal, often flexuose, stuffed or 
hollow, reddish-brown or blackish, 2.5—4 cm. long, 2-4 mm. thick. 
Type collected among chips in the Adirondack Mountains, New York, September, C. H. Peck 
(herb. N. Y. State Mus.). . 
DistR1IBuTION: New York and Missouri. 
24. Nolanea mammosa (L.) Quél. Champ. Jura Vosg. 89. 1872. 
Agaricus mammosus I,. Sp. Pl. 1174. 1753. : 
Pileus rather thin, large, conic-campanulate, papillate, gregarious, 3-4 cm. broad; surface 
dry, glabrous, usually somewhat striate, brown or fuliginous, becoming paler on drying; 
context thin, with peculiar odor; lamellae adnexed, seceding, broad, ventricose, subcrowded, 
grayish to salmon-colored; spores ellipsoid, irregular, angular, usually apiculate, rose-colored, 
10.5-14 X 7-8 yw; stipe long, slender, equal, smooth, shining, subconcolorous or pallid, slightly 
enlarged and pruinose at the apex, snapping readily, whitish-mycelioid at the base, 6-12 cm. 
long, 3-5 mm. thick. 
Type LOcALITy: Europe. 
Hlasrrat: On the ground in woods or grassy places. 
DIsTRIBUTION: Throughout the United States, south to Alabama arid west to Washington and 
ifornia; also in Europe. 
TELUSTRATIONS: Boud. Ie. Myc. 1: pl. 97; Bres, Fungi Trid. pl. 81; Bull. Herb. Fr. pl. 526 (as 
Agaricus seviceus); Quél. Champ. Jura Vosg. $l. 6, f. 5; Ricken, Blatterp. Deutschl. pi. 74, f. 6. 
Exsiccati: Sydow, Myc. Mar. 3516. 
25. Nolanea occidentalis Murrill, sp. nov. 
Pileus thin, convex to plane, with a small rounded umbo, gregarious or subcespitose, 3 cm. 
broad; surface hygrophanous, glabrous, sordid-avellaneous, striate, margin entire, concolorous; 
context very thin, without odor; lamellae sinuate, nearly free, distant, ventricose, dull-whitish 
to salmon-colored; spores globose, angular, apiculate, uniguttulate, rose-colored, copious, 
