Part 1, 1914] AGARICACEAE} 25 



greenish-yellow on the margin, which is frequently wavy and lobed; context white, taste 

 farinaceous ; lamellae thin, close, rounded behind, adnexed, white, sometimes tinged with 

 yellow in front; spores minute, 5-6X4-5 /*; stipe stout, solid, nearly equal, white, sometimes 

 tinged with yellow, 3-5 cm. long, 6-12 mm. thick. 



Type locality: Mohawk Hill, Ivewis County, New York. 



Habitat: Among mosses and fallen leaves under evergreen and deciduous trees on the margin 

 of a swamp. 



Distribution: Known only from the type locality. 

 Illustrations: Bull. N. Y. State Mus. 157: pi. 124, f. 1-5. 



87. Melanoleuca sejuncta (Sow.) Murrill. 



Agaricus sejunctus Sow. Engl. Fungi pi. 126. 1799. 



Pileus fleshy, convex to expanded or depressedjusually umbonate, 2.5-7.5]cm. broad; surface 

 slightly viscid, streaked with innate brown or blackish fibrils, varying from whitish or yellowish 

 to olivaceous or smoky-brownish; context white, fragile, odor and taste somewhat mealy; 

 lamellae broad, uneven, sub distant, fragile, rounded behind or emarginate, white with yellow 

 reflections from a lemon-yellow layer between the lamellae; spores subglobose, smooth, hyaline, 

 5-6 m; stipe very variable in length and shape, solid, often irregular, white to yellowish or 

 olivaceous, 2.5-7.5 cm. long, 8-16 mm. thick. 



Type locality: England. 

 Habitat: On the ground in mixed woods. 

 Distribution: Eastern United States; also in Europe. 



Illustrations: Sow. Engl. Fungi pi. 126; Gill. Champ. Fr. pi. 67 (700); Atk. Stud. Am. Fungi 

 f. 89. 



88. Melanoleuca tenuipes Murrill, Mycologia 5: 223. 1913. 



Tricholoma tenuipes Murrill, Mycologia 5: 223. 1913. 



Pileus small, thin, convex, not expanding, becoming very slightly depressed at the center, 

 2 cm. broad; surface pallid, with a stramineous or avellaneous tint, smooth, glabrous, margin 

 entire, concolorous, incurved ; lamellae sinuate-adnexed, distant, broad, several times inserted, 

 white, more or less notched on the edge; spores ellipsoid, smooth, hyaline, 5-7X3.5-4.5 fx\ 

 stipe slender, equal, solid, concolorous, white at the apex, smooth, dry, glabrous, 4 cm. long, 

 2 mm. thick. 



Type locality: Seattle, Washington. 

 Habitat: On the ground in woods. 

 Distribution: Known only from the type locality. 



89. Melanoleuca platyphylla Murrill, Mycologia 5: 219. 1913. 



Tricholoma platyphyllum Murrill, Mycologia 5: 223. 1913. 



Pileus convex to slightly depressed, rather thick, solitary, 3.5 cm. broad; surface smoot^, 

 subglabrous, white with a cremeous tint, margin entire, concolorous ; lamellae white, subdistant, 

 ventricose, very broad; spores ellipsoid, smooth, hyaline, granular, 8.5 X 6 ju; stipe tapering 

 upward from a swollen base, pure-white, smooth, glabrous, 8 cm. long, 5-9 mm. thick. 



Type locality: Seattle, Washington. 



Habitat: In humus in woods. 



Distribution: Known only from the type locality. 



90. Melanoleuca pinicola Murrill, Mycologia 5: 219. 1913. 



Tricholoma pinicola Murrill, Mycologia 5: 223. 1913. 



Pileus rather thin, convex, umbonate, becoming nearly plane, gregarious, reaching 5 cm. 

 broad; surface smooth, glabrous, subshining, dry or slightly moist, milk-white, margin entire, 

 concolorous, strongly inflexed on drying; lamellae sinuate, not crowded, rather broad, plane or 

 slightly ventricose, white or slightly discolored; spores ellipsoid, smooth, hyaline, 5-6X3-4 fi; 

 stipe slightly tapering upward, fleshy, solid or stuffed, milk-white, smooth, glabrous, whitish- 

 mycelioid at the base, 5-7 cm. long, 4-9 mm. thick. 



Type locality: Tacoma, Washington. 

 Habitat: On much decayed coniferous wood. 

 Distribution : Known only from the type locality. 



