Jan. 1907] North American Species of Leptota 3 



63. LEPIOTA CRETACEA, Agaricus cretaceus Bul- 

 LiARD, Herb. Fr. Pl. 374, 1787, Agaricus cepaestipes (in 

 part) Sowerby^ Eng. Fungi, 1797; Cooke, Illustr. Pl. 942 ; 

 Peck, N. Y. Rep. 1882 and 1904; Lepiota mammaeformis Un- 

 derwood, Bull. Torr. Club, 1897. 



Pileus submembranaceous, at first subovoid with an obtuse 

 apex, then campanulate and expanded, umbonate ; the dermis 

 white beneath the cuticle, densely flocculose-scaly and farina- 

 ceous, plicate-sulcate around the margin ; the cuticle thin, brown- 

 ish, darker on the umbo, very soon separating into minute scales 

 which are more or less deciduous. Stipe arising from a more 

 or less elongated and thickened base, tapering upward, flexuous, 

 hollow, white, subglabrous ; the annulus thin, membranaceous, 

 subpersistent. Lamellae rather narrow, close, free, white ; spores 

 elliptic-ovoid, 8-10x5-7 mic. 



Caespitose ; growing in the rich soil of gardens, hot beds, 

 etc. ProlDably common in such situations throughout the coun- 

 try. Pileus 5-10 cm. in diameter; the stipe 8-16 cm. in height, 

 4-6 mm. thick at the apex and 1-2 cm. thick at the base. 



64. LEPIOTA NICTOPHILA Ellis, Bull. Torr. Club. 

 1874 ; Sylloge V. 50. 



Pileus fleshy, cylindraceous-hemispheric then convex or con- 

 cave, broadly umbonate ; the margin sulcate-striate, the striae at 

 length reaching nearly to the center ; the cuticle at first continu- 

 ous, black, soon breaking up into small scales which are scattered 

 over the surface. Stipe slender, fistulous, fibrous-stuffed, farina- 

 ceous-scaly, ornamented above the middle with an annular band, 

 marked around the base by a black line. Lamellae rather close, 

 whitish, rounded behind and free ; spores oblong, about 5 mic. 

 in length. 



Subcaespitose and furnished with an abundant white myce- 

 lium. Newfield, N. J., Ellis. Pileus 2-3 cm. in diameter, the 

 stipe 2-3 cm. in height, 



65. LEPIOTA LONGISTRIATA Peck, Bull. Torr. 

 Club, 1898, 



Pileus submembranaceous, convex or nearly plane, umbon- 

 ate ; the dermis radiately fibrillose, striate nearly or quite to the 

 umbo ; the cuticle grayish or brownish, broken up into small 

 fibrous scales. Stipe tapering upward from a thickened base, 

 slender, fistulous ; the annulus delicate, evanescent. Lamellae 

 narrow, close, free, whitish or yellowish ; spores elliptic, 6-8 x 

 4-5 mic. 



Growing in rich soil in gardens. Alabama, Earle. Pileus 

 3-5 cm. in diameter, the stipe 5-8 cm. long and 2-6 m.m. thick. 



