North American Flora: Agaricales, Agaricaceae (Vol. 10 ... - MykoWeb

NORTH AMERICAN FLORA [VotUMB 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, indexed, 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, 6-7 X 3-4/¿; 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/*; 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 terrifera (Peck) Murrill.
Tricholoma terriferum 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, subglobose, 3 ¡i long; stipe equal,
short, solid, white, floccose-squamulose at the apex, 2.5-4 cm. long, 12-16 mm. thick.
TYPS 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 Gi\\. Champ. Fr. 91. 1876.
Agaricus {Tricholoma) rubicundus Peck, Bull. Buffalo Soc. Nat. Sei. 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.
TYPE 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. IS, f. 3; Hard, Mush-
rooms f. 51.
EXSICCATI: Herpell, Präp. 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