NORTH AMERICAN FLORA [Volume 10 



73. Melanoleuca angustifolia Murrill, sp. nov. 



Pileus fleshy, rather thin, conic-convex to plane with a broad, conic umbo, subcespitose, 

 reaching 9 cm. broad ; surface slimy- viscid when wet, smooth, glabrous, brownish-yellow with a 

 lilac tint at the center, fading out to a broad, white, marginal zone; cuticle separable, margin 

 thin, white, entire, inflexed, especially on drying ; context firm, white, rather thin, with pleasant 

 odor and nutty flavor ; lamellae plane in mass, very narrow and much crowded, sinuate, several 

 times inserted, white, slightly yellowish when seen at some angles; spores ellipsoid, smooth, 

 hyaline, granular, 6-7X3-4/*; stipe equal or nearly so, smooth, dry, slightly pruinose, milk- 

 white, reaching 9 cm. long and 1.5 cm. thick. 



Type collected on the ground in woods on the bank of the Bronx River in the New York Botan- 

 ca Garden, August 30, 1911, W. A. Murrill. 



Distribution: Known only from the type locality. 



' 74. Melanoleuca intermedia (Peck) Murrill. 



Tricholoma intermedium Peck, Ann. Rep. N. Y. State Mus. 41: 60. 1888. 



Pileus thin, campanulate, obtuse, 5-7.5 cm. broad; surface glabrous, slightly viscid when 

 moist, greenish- yellow; context white; lamellae crowded, free or slightly adnexed, white; spores 

 broadly ellipsoid, 5X4/x; stipe equal, firm, glabrous, white, 2.5-5 cm. long, 6-10 mm. thick. 



Type locality: Catskill Mountains, New York. 



Habitat: Woods. 



Distribution: Known only from the type locality. 



75. Melanoleuca terrif era (Peck) Murrill. 



Tricholoma terrif erum Peck, Ann. Rep. N. Y. State Mus. 41: 60. 1888. 



Pileus broadly convex or, nearly plane, 7.5-10 cm. broad; surface glabrous, viscid, pale- 

 alutaceous, generally soiled with adhering particles of earth carried up in its growth, margin 

 irregular, often wavy; context white, with no decided odor; lamellae thin, crowded, slightly 

 adnexed, white, not spotted or changeable; spores minute, sub globose, 3 m long; stipe equal, 

 short, solid, white, floccose-squamulose at the apex, 2.5-4 cm. long, 12-16 mm. thick. 



Type locality: Catskill Mountains, New York. 



Habitat: Thin woods. 



Distribution: Known only from the type locality. 



76. Melanoleuca Russula (Scop.) Murrill. 



Agaricus Russula Scop. Fl. Cam. ed. 2. 2: 435. 1772. 



Tricholoma Russula Gill. Champ. Fr. 91. 1876. 



Agaricus (Tricholoma) rubicundus Peck, Bull. Buffalo Soc. Nat. Sci. 1: 42. 1873. 



Pileus fleshy, convex, becoming plane or centrally depressed, obtuse, solitary or sub- 

 cespitose, 7.5-12.5 cm. broad; surface viscid when moist, smooth or dotted with granular 

 squamules on the disk, pale-pink or rose-red suffused at times with yellowish stains, margin 

 usually paler, involute and minutely downy in the young plant ; context white, sometimes tinged 

 with red, taste mild; lamellae subdistant, rounded behind or subdecurrent, white, often be- 

 coming red-spotted with age; spores ellipsoid, 6-7.5 X4m; stipe solid, firm, dry, white, often 

 reddish below, squamulose at the apex, 2.5-5 cm. long, 12-16 mm. thick. 



Typ£ locality: Carniola. 



Habitat: On the ground under oaks or in mixed woods. 

 Distribution: Northeastern United States; also in Europe. 



Illustrations: Bull. N. Y. State Mus. 10: pi. 77, f. 1-5; Cooke, Brit. Fungi pi. 1116; Gill. 

 Champ. Fr. pi. 60 (696); Lucand, Champ. Fr. pi. 128; Mcllv. Am. Fungi pi. 18, f. 3; Hard, Mush- 



r00m ExsiccATi: Herpell, Prap. Hutpilze 61; Shear, N. Y. Fungi 1402. 



77. Melanoleuca subtransmutans Murrill, sp. nov. 



Pileus convex to expanded', gregarious, reaching 4-8 cm. broad; surface smooth, viscid, 

 light-pinkish-brown when shaded, becoming dark-brown where fully exposed, margin at length 

 slightly sulcate; context whitish, unchanging, mild; lamellae crowded, rather narrow, sinuate, 

 white stained with reddish, becoming darker with age; spores ellipsoid, smooth, hyaline, 6-7 X 



