398 NORTH AMERICAN FLORA [VOLUME 9 
Pileus dull-rosy-isabelline with a fulvous tint; lamellae and stipe con- 
colorous. 
Pileus some shade of fulvous or latericeous. 
Pileus 2-5 cm. broad. 
71. C. cuticolor. 
Pileus gibbous, subfulvous. 72. C. hondensis. 
Pileus slightly depressed, very light brown when moist, fulvous 
when dry. 73. C. subinversa. 
Pileus usually umbilicate, ochraceous-red. 44. C. sinopica. 
Pileus 5-8 em. broad, infundibuliform. 45. C. inversa. 
Pileus some shade of gray, brown, or black, rarely with a violet tint. 
Lamellae white or yellowish, unchanging. 
Pileus becoming infundibuliform, 10 cm. or more broad. 74, C. avellaneialba. 
Pileus not becoming infundibuliform. 
Pileus reaching 4.5 cm. broad, avellaneous with fuliginous 
center. 75, C. oculata, 
Pileus 5-10 em. broad. 
Stipe 4-6 cm. long. 55. C. clavipes. 
Stipe 10-15 cm. long. 76. C. oreades. 
Lamellae gray, violet, murinous, or blackish, or becoming so with age or 
on drying. 
Pileus 2-3 cm. broad. : 
Pileus grayish-violet, tinged with brown on the disk; lamellae 
pale-violet. 77. C. violaceifolia. 
Pileus smoky-brown; lamellae murinous. 78. C. murinifolia. 
Pileus 2-6 cm. broad. 
Pileus fuliginous; lamellae white to grayish-discolored. 79. C. atrialba. 
Pileus dull-avellaneous; lamellae concolorous, becoming fuli- 
ginous. 80. C. brunnescens. 
Pileus 8-10 cm. broad. 
Pileus solitary, grayish-white or avellaneous. 81. C. grisetfolia. 
Pileus subcespitose, cinereous to pale-murinous. 82. C. Harperi. 
III. SPECIES OCCURRING IN TROPICAL NorTH AMERICA 
Pileus snow-white, 7 mm. broad. 83. C. niveicolor. 
Pileus whitish or pale-isabelline. 
Pileus 1 cm. broad. 84. C. trojana. 
Pileus 5-8 cm. broad. 
Stipe 2—4 mm. thick. 85. C. Broadwayi. 
Stipe 2 em. thick. 86. C. mexicana. 
Pileus pallid with a rosy tint, light-bay on the conic umbo, 2 cm. broad. 87. C. incrustata. 
Pileus dilute-testaceous, deeply umbilicate, 3-5 cm. broad. . 88. C. testaceoflava. 
1. Clitocybe dealbata (Sow.) Gill. Champ. Fr. 152. 1874. 
Agaricus dealbatus Sow. Engl. Fungi pl. 123. 1798. 
Pileus slightly fleshy, convex becoming plane, gregarious; 2.5-4 cm. broad; surface dry, 
smooth, glabrous, subshining, white, margin sometimes upturned or wavy: context white, 
the taste mild; lamellae crowded, thin, adnate, white: spores ellipsoid, 4.5 X 2-2.5 ut stipe 
fibrous, equal, stuffed, pruinose or mealy at the apex, white, 2-3 cm. long, 2-3 mm. thick. 
TYPE LOCALITY: England. 
Hasttat: Grassy places. 
DiIsTRIBUTION: Temperate North America; also in Europe. 
. Pe aoe: Cooke, Brit. Fungi pl. 104 (142); Hussey, Ill. Brit. Myc. 2: pl. 36; Sow. Engl. 
ungi pl. 
2. Clitocybe Whetstoneae Murrill, sp. nov. 
Pileus convex to plane or slightly depressed, cespitose, 5 cm. broad; surface dry, smooth, 
glabrous, white, not striate, margin entire, concolorous, inflexed on drying: context whitish, 
the taste sweet and the odor pleasant; lamellae decurrent, rather narrow, exceedingly crowded, 
white: spores ellipsoid, smooth, hyaline, about 5 X 3 uw: stipe tapering upward, smooth, gla- 
brous, white, hollow, 5 em. long, 7 mm thick. ‘ 
Type collected in grass at Minneapolis, Minnesota, Mary S. Whetstone (herb. N. Y. Bot. Gard.). 
DISTRIBUTION: Known only from the type locality. 
3. Clitocybe truncicola (Peck) Sacc. Syll. Fung. 5: 184. 1887. 
Agaricus (Clitocybe) truncicola Peck, Bull. Buffalo Soc. Nat. Sci. 1: 46. 1873. 
Pileus thin, firm, expanded or slightly depressed at the center, 1.5—3.5 cm. broad; surface 
glabrous, dry, white: lamellae crowded, thin, narrow, adnate or slightly decurrent, white: 
