Part 3, 1917] AGARICACEAE 195 
_, Stipe 7-11 mm. thick. 48. G. spinulifer. 
Pileus testaceous-isabelline to orange; stipe 2-4 mm. thick. ll. G. carbonarius. 
Pileus red to bay or reddish-cinnamon; stipe 4-8 mm. thick. 
Lamellae ochraceous. 49. G. subcarbonarius, 
; Lamellae fulvous to brown. 50. G. foedatus. 
Pileus fibrillose to squamulose. 
Stipe 4 mm. thick; pileus flavo-melleous. 51. G. ornatulus. 
Stipe 6-10 mm. thick; pileus grayish-brown. 52. G. Abramsii. 
Stipe 13 mm. thick; pileus castaneous-fulvous, 53. G. longisporus. 
Species growing on dead logs or stumps. 
Pileus glabrous. 
Pileus dry or moist, not viscid. 
Pileus 1-2.5 em. broad. 
Pileus fulvous. 22. G. bellulus. 
Pileus latericious. 54. G. oregonensis. 
Pileus 3-5 cm. broad. 
Stipe 3-5 mm. thick. 27. G. flavidellus. 
Stipe 10-15 mm. thick. 55. G. vialis. 
Pileus 5-10 cm. broad. 
Pileus green. 56. G. subviridis. 
Pileus isabelline. 57. G. permollis.. 
Pileus ferruginous or fulvous. 58. G. echinulisporus. 
Pileus viscid. 
Pileus 3-5 em. broad. 
Pileus melleous with fulvous center. 59, G. subflavidus, 
Pileus ochroleucous with testaceous center. 60. G. laeticolor. 
Pileus 9 cm. broad. 61. G. laius. 
Pileus floccose or squamutlose. 
Pileus cremeous with castaneous umbo. ° 62. G, decoratus. 
Pileus golden-tawny or ferruginous-fulvous. 36. G. penetrans., 
¢ 
III. SPECIES OCCURRING IN TROPICAL NORTH AMERICA 
Species growing on the ground. 
Stipe 2-4 mm. thick. 
Surface of pileus dry. 63. G. hypholomoides. 
Surface of pileus viscid. ll. G. carbonarius. 
Stipe 10 mm. thick. 64. G. jalapensis. 
Species growing on dead logs and stumps. 
Pileus glabrous. 
Pileus yellowish-olive; stipe 1.5 cm. long. 65. G. olivaceus. 
Pileus yellowish-orange to greenish; stipe 4-7 cm. long. 66. G. aureoviridis. 
Pileus melleous, ochraceous, or luteous. 27. G. flavidellus. 
Pileus ferruginous to fulvous. 7. G. chrysotrichoides, 
Pileus ferruginous-vinous. 68. G. helvoliceps. 
Pileus red tinged with vinous. 69. G. vinicolor, 
Pileus fibrillose to squamulose, sometimes becoming more or less 
glabrous with age. 
Pileus golden-yellow. 
Stipe 2.5 cm. long. 70. G. chrysotrichus. 
Stipe 8 cm. long. 
Lamellae decurrent. 71. G. chrysopellus. 
Lamellae adnate. 72.:G. aureobrunneus. 
Pileus pale-yellow to ferruginous or ferruginous-orange. 
Pileus 2-4 cm. broad, rarely reaching 6 cm. 
Pileus umbilicate or depressed. . 
Stipe 22.5 cm. long. 73. G. hispidus. 
Stipe 3-5 cm. long. 74. G. palmicola. 
Pileus convex to expanded. 
Stipe 2-4 cm. long. 
Pileus ochraceous. Pee 
Context with mild taste. 75. G. pholiotoides. 
Context with. bitter taste. 
Margin striate. 76. G. parvulus. 
Margin not striate. 77. G, hispidellus. 
Pileus ferruginous. 78. G. bryophilus. 
Pileus ferruginous-orange. 79. G. subpenetrans. 
Stipe 4-7 cm. long. . 
Pileus ochraceous. 80. G. Nashii. 
Pileus pale-ferruginous. 81. G. Earle. 
Pileus 6-10 cm. broad. 
Pileus becoming deeply depressed. 82. G. depressus. 
Pileus not becoming deeply depressed. : 
Lamellae decurrent. 83. G. tenuis. 
Lamellae adnate. 84, G. areolatus. 
Pileus fulvous. 36. G. penetrans. 
Pileus latericious. 85. G. lateritius. 
