=L. nauci´na= Fr. No translation applicable. =Pileus= 1–1½ in. broad, white, the disk of the same color, fleshy, soft, gibbous or obtusely umbonate when flattened, even, _the thin cuticle splitting up into granules_. =Stem= 1½-3 in. long, stuffed, at length _somewhat hollow_, but without a definite tube, _attenuated upward_ from the thickened base, fibrillose, unspotted, white. =Ring= _superior_, tender, but persistent, _adhering to the stem_, at length reflexed. =Gills= free, approximate, crowded, ventricose, 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, 6–7µ _Massee_. _L. naucina_ Fr. is the European species which has its American counterpart 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 Amanita, 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 external differences. In L. naucinoides the bulb and stem are continuous, each passing into the other imperceptibly; in A. phalloides the junction 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. naucinoides and is pendulous, and the gills are permanently white. A certain 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 Plate 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×5–8µ broad. _Peck_, 48th Rep. N.Y. State Bot. Kansas, _Cragin_; Wisconsin, _Bundy_; New Jersey, _Ellis_; Iowa, _Macbride_; New York, _Peck_, 23d, 29th, 35th Rep.; Indiana, _H.I. Miller_, _Dr. J.R. Weist_.