Leucosporee 



unspotted, white. Ring superior, tender, but persistent, adhering to Lepiota. 

 the stem, at length reflexed. Gills free, approximate, crowded, ventri- 

 cose, soft, white. 



There is a prominent collar, as in the Clypeolarii, embracing the stem. 

 Stature and appearance of L. excoriata, but commonly smaller, the 

 superior ring adfixed, etc. Fries. 



Spores subglobose, 6-7/u. Massee. 



L. naucina Fr. is the European species which has its American coun- 

 terpart in L. naucinoides Pk. The variations in the American species 

 are noted under L. naucinoides. 



As Amanita phalloides in its white form the poisonous white Ama- 

 nita, resembles L. naucina or L. naucinoides in some stages of its growth 

 and may be confounded with it, careful note should be taken of their ex- 

 ternal differences. In L. naucinoides the bulb and stem are continuous, 

 each passing into the other imperceptibly; in A. phalloides the junc- 

 tion of stem and bulb is abrupt and remains so, and the bulb is more 

 or less enwrapped in the volva. The ring is also larger than in L. nau- 

 cinoides and is pendulous, and the gills are permanently white. A cer- 

 tain means of distinguishing between them is by the application of heat 

 as in cooking. On toasting both it will be found that the gills of the 

 Amanita remain white, but those of the Lepiota turn quickly brown. 



L. naucinoi'des Pk. No translation applicable. (Plates XV, XII, 

 fig. 2, p. 32.) Pileus soft, smooth, white or snowy-white. Gills free, 

 white, slowly changing with age to a dirty pinkish-brown or smoky- 

 brown color. Stem ringed, slightly thickened at the base, colored like 

 the pileus. Spores subelliptical, uninucleate, white, 8-10 long xS-8/* 

 broad. Peck, 48th Rep. N. Y. State Bot. 



Kansas, Cragin; Wisconsin, Bundy; New Jersey, Ellis; Iowa, Mac- 

 bride; New York, Peck, 23d, 29th, 35th Rep.; Indiana, H.I. Miller, 

 Dr. J. R. Weist. 



L. naucinoides Pk. is the American counterpart of L. naucina Fr., 

 a European species, excepting that the spores of the latter are described 

 as globose. The caps are ovate when young and usually from I / 3 in. 

 across when expanded, but occasionally reach 4 in., smooth, but 

 frequently rough or minutely cracked in the center, white or varying 

 shades of white deepening in color at the summit. In a rare form var. 

 squamo'sa, large, thick scales occur which are caused by the breaking 



45 



