Part 2, 1917] AGARICACEAE 135 
white, sometimes streaked, darker on the disk; context white, almost tasteless; lamellae free, 
broad, white when young, becoming salmon-pink; spores broadly ellipsoid, smooth, flesh- 
colored, 6-8 X 5-6 w; cystidia ellipsoid, stout, thick-walled, hyaline, forked at the tip; stipe 
equal or enlarged at the base, white at the apex, more like the pileus below, usually glabrous, 
nearly solid, brittle, 8-15 cm. long, 7-12 mm. thick. 
TYPE LOCALITY: Bavaria. 
Hasirat: In open woods about stumps and on decaying wood of various kinds. 
DristRisuTion: Throughout temperate and tropical North America; also in Europe. 
ILLUSTRATIONS: Ann. Rep. N. V. State Mus. 54: pl. 74, f. 9-19; Atk. Stud. Am. Fungi ed. 1. 
f. 132; ed. 2. f. 135; Boud. Ic. Myc. 1: pl. 87 (as Agaricus patricius); Cooke, Brit. Fungi pl. 301, 565 
(302), 302 (303), 357 (304), 303 (305); Gill. Champ. Fr. pl. 260, 547 (548); Lucand, Champ. Fr. pi. 
105, 187; N. Marshall, Mushr. Book pl. 25; Mycologia 1: pl. 3, f. 2; Pat. Tab. Fung. 1: f. 335; 
Schaeff. Fung. Bavar. pl. 10; Sow. Engl. Fungi 1. 108. 
37. Pluteus grandis Peck, Bull. N. Y. State Mus. 105: 27. 1906. 
Pileus fleshy, firm, convex, with the margin sometimes curved upward, about 10 cm. 
broad; surface silky-fibrillose, white or whitish, margin thin; context white, the taste farina- 
ceous; lamellae thin, crowded, free, denticulate on the edges, whitish, becoming flesh-colored; 
spores subglobose, angular, uninucleate, 7.5 yu; stipe rather long, equal, firm, solid, silky- 
fibrillose, white, 10 cm. long, 2 cm. thick. 
Type LocaLity: Bolton Landing, New York. 
Hastirat: Among fallen leaves in woods. 
DIstRIsuTION: Known only from the type locality. 
38. Pluteus californicus McClatchie, Proc. So. Calif, Acad. 1: 
384. 1897. 
Pileus convex to expanded, 2-3 mm. thick, 2-4 cm. broad; surface hygrophanous, rugose- 
veined, greenish-gray, becoming cinnamon-gray, margin thin, short-striate; lamellae crowded, 
thin, elliptic, 3-5 mm. broad, grayish-white to flesh-gray; spores globose or broadly ovoid, 
irregular, 5-8 2; cystidia numerous, fusoid, capitate; stipe substraight, shining, pale-yellowish- 
gray, hollow, fibrous, 2-6 cm. long, 2-3 mm. thick. 
Tyre Locality: Pasadena, California. 
Hasirat: On the ground among decayed leaves and branches. 
DIsTRIBUTION: Southern California. 
39. Pluteus latifolius Murrill, sp. nov. 
Pileus thick, convex to nearly plane, regular, not umbonate, solitary, 4 cm. broad; surface 
dry, tomentose, smooth, avellaneous-isabelline, the disk radiate-rugose with fuliginous lines, 
margin entire, concolorous, not projecting; lamellae free, very broad and ventricose, crowded, 
fragile, whitish to salmon-colored; spores broadly ellipsoid, smooth, rose-colored, 7 X 5-6 y; 
stipe equal, rather slender, firm, hollow, densely short-tomentose, concolorous, 5 cm. long, 
5 mm. thick. 
Type-collected on dead alder in woods at Seattle, Washington, October 20-November i, 
1911, W. A. Murrill 510 (herb: N. Y. Bot. Gard.). 
DIstRIBUTION: Known only from the type locality. 
40. Pluteus washingtonensis Murrill, sp. nov. 
Pileus rather thick, convex, regular, solitary, 3 cm. broad; surface moist, glabrous, radiate- 
striate, avellaneous-umbrinous, slightly darker on the disk, at least in dried specimens, margin 
entire, concolorous; lamellae free, crowded, subventricose, white to salmon-colored, entire 
and concolorous on the edges; spores oblong-ellipsoid, smooth, rose-colored, apiculate, uni- 
guttulate, copious, 7-8.5 X 5-6 w: stipe equal or slightly tapering upward, smooth, glabrous, 
white, 5~7 cm. long, 2-4 mm. thick. 
Type collected on decayed wood in woods at Seattle, Washington, October 20-November I, 
1911, W. A. Murrill 348 (herb. N. Y. Bot. Gard.). 
DISTRIBUTION: Vicinity of Seattle, Washington. 
