Part 1, 1914] AGARICACEAE 53 



39. Lepiota roseifolia Murrill, Mycologia 4: 235. 1912. 



Pileus regular, convex to subexpanded, solitary, 4 cm. broad ; surface dry, shining, innate- 

 fibrillose, radiate-rimose, smooth and glabrous at the center, castaneous, blackish-tinged when 

 fresh, assuming a more reddish tint after picking ; lamellae free, crowded, slightly ventricose, 

 regular, white when fresh, changing to rose-colored on drying or when bruised; spores ellipsoid, 

 smooth, hyaline, 7-8X3-3.5 m; stipe equal, compressed, very long because buried in leaves, 

 hollow, smooth, glabrous, avellaneous-isabelline, white at the apex, 17 cm. long, 5 mm. thick; 

 annulus superior, slight, fixed, fuliginous. 



Type locality: L,a Honda, California. 

 Habitat: In humus in a redwood forest. 

 Distribution: Known only from the type locality. 



40. Lepiota jamaicensis Murrill, Mycologia 3 : 87. 1911. 



Pileus 10 cm. in diameter, convex to plane, with a prominent, hemispheric umbo, cespitose 

 on dead wood, the entire sporophore becoming reddish-brown when bruised or on drying; 

 surface dry, white or very pale yellowish, adorned with brownish, rloccose scales 1 mm. broad, 

 the remains of the cuticle; umbo brown, minutely scaly; context thin, white ;. lamellae free, 

 white, becoming discolored when the spores mature; spores ovoid, rounded at both ends, not 

 apiculate, often uninucleate, very pale brown, 9X6-7 /x; stipe enlarged at the base, tapering 

 upward, 10 cm. or more long, 1.7 cm. thick below, 0.7 cm. thick above, subglabrous, slightly 

 reddish-brown; annulus large, superior, movable, reddish-brown. 



Typb locality: Manchioneal, Jamaica. 



Habitat: On a hardwood stump in a cocoanut plantation. 



Distribution : Known only from the type locality . 



41. Lepiota americana Peck, Ann. Rep. N. Y. State Mus. 49: 



56. 1897. 



Agaricus americanus Peck, Ann. Rep. N. Y. State Cab. 23: 71. 1872. 



Pileus fleshy, ovoid to campanulate and expanded, umbonate, solitary or subcespitose, 

 5-10 cm. or more broad; surface radiate-fibrillose beneath the cuticle and at first white, the 

 cuticle brick- colored or bay-brown, at first continuous, soon breaking up except upon the 

 umbo into small scales, which are gradually drawn apart and scattered over the surface, sub- 

 striate on the margin ; context thin, white, changing to dull-red or smoky-red when bruised or 

 on drying; lamellae rather narrow, close, free, white; spores ovoid or subellipsoid, uniguttulate, 

 subhyaline, 7.5-10X5-7 /*; stipe tapering upward from the more or less thickened and elongate 

 base, fistulose, smooth, subglabrous, white, changing to red when bruised, 8-12 cm. or more 

 long, 4—6 mm. thick at the apex, 8-12 mm. thick at the base; annulus thin, membranous. 



Type locality: Buffalo, New York. 



Habitat: Rich soil in grassy grounds or around old stumps, or on compost heaps. 

 Distribution: New Brunswick to Alabama and west to Iowa. 



Illustrations: Ann. Rep. N. Y. State Mus. 49: pi. 44, f. 6-10; Atk. Stud. Am. Fungi/. 82; 

 Mcllv. Am. Fungi pi. 15a; Mycologia 3: pi. 49, f. 6. 



42. Lepiota arenicola Peck, Ann. Rep. N. Y. State Mus. 40: 59. 



1887. 



Pileus broadly conic to subplane, 6-12 mm. broad; surface white or cinereous, granulose 

 and obscurely punctate-squamulose, margin substriate, crenulate; lamellae distant, sub- 

 ventricose, white; spores oblong, subfusoid, acute at the base, smooth, hyaline, 12-15X5-6 /*; 

 stipe equal, glabrous, whitish, stuffed, 1.5-2.5 cm. long, 5 mm. thick; annulus imperfect, 



nearly obsolete. 



Type locality: New York. 

 Habitat: In sandy ground. 

 Distribution: New York. 



