NATURAL HISTORY SURVEY 29 



Stem hollow, equal or slightly thickened at the base, smooth 

 or slightly silky-fibrillose below the annulus, whitish; the annulus 

 well developed, membranous, white or pinkish, persistent. 



Spores subellipsoid, uninucleate, 9 to 11 x 5 to 6 p. Pileus 

 2.5 to 6 cm. broad; stem 4 to 9 cm. long, 4 to 6 mm. thick. 



Woods near Chicago. Harper. 



Lepiota illinita Fr. 



Pileus slightly fleshy, ovate then campanulate or expanded, 

 subumbonate, viscid, smooth, white. 

 Lamellae close, free, shining white. 



in equal or slightly tapering upward, stuffed then hollow, 

 viscid, white. 



Spores ellipsoid, 5 x 4 /a. Pileus 2.5 to 6 cm. broad; stem 5 to 



in. long. 



Under trees in woods. When young, the whole plant is pure 

 white. Sometimes the disk becomes pallid or fuscous with age. 



Lepiota naucina Fr. 



Pileus globose then expanded and almost plane, somewhat 

 umbonate and smooth in the center, white; cuticle thin, glabrous 

 or breaking up into evanescent granules; flesh thick, soft. 



Lamellae approximate, free, white. 



.Stem somewhat hollow, enlarged at the base; ring superior, 

 thin, delicate, persistent. 



Spores subglobose, 6 to 7 u. in diameter (Massee) ; obovate, 

 white, with an oily, straw-colored nucleus, 8 to 9 x 6 p (Bres.) 



Plant sometimes a delicate tan, the gills assuming a dirty 

 pinkish hue. Edible. Taste mild and pleasant. 



Lawns, grassy places in streets, roadsides and waste grounds. 

 June to September. Often locally abundant in the parks after 

 rains. Pileus 4 to 9 cm. broad, stem 5 to 10 cm. high, 6 to 10 

 mm. in diameter. The pileus has the texture and color of slightly 

 soiled white kid-leather. Professor Peck in Rep. X. Y. Mus. 

 35: 160, describes the American counterpart of this species as 

 Lepiota naucinoides, and in Rep. 54: 162, he states that "by dis- 

 regarding the spore characters our plant has sometimes been re- 

 ferred to L. naucinus and sometimes to Agaricus cretaceus FT." 

 The spores of L. naucinoides are described as " subelliptical, uni- 

 nucleate, 7.5 to 10 x 5 to 7.5 /*." Those of our plants vary from 

 elliptical (7 to S x 4 to 5 ft.) to subglobose (5 to 7 ft.). It does not 

 appear therefore that a distinction based upon the shape of the 

 spores is applicable to them. There is an excellent figure of the 

 species in Bres. Funghi Mang. e Vel., Tav. XV. See also Morgan, 

 Journ. Myc. 13: 10, where the plant is given as L. naucinoides. 



Lepiota granulosa Batsch. 



Pileus ferruginous or reddish-brow r n, convex then flattened, 

 obtusely umbonate, furfuraceous, granular; flesh white or tinged 

 with red. 



Lamellae close, rounded behind, slightly adnexed, white. 



