288 BOTANICAL GAZETTE foCTOBER 
Very little of the surface of the pileus is visible, since all except a 
narrow marginal portion is covered with the calyptra of the volva, 
which forms a thick, white, tough skin or covering, closely and 
tightly fitting the cuticle of the pileus. In cutting through the calyptra 
and pileus the line of junction can be seen, and in fresh plants this line 
of division is brought out distinctly because of the pale-yellow cuticle 
of the pileus. This calyptra, covering the larger part of the pileus like 
lar of the volva, 
IG. 5.—The stem separating from the volva; note inner col 
striate margin of the pileus, and very distinct thick calyptra. 
a closely fitting cap, is often unbroken; but in large, well- expanded 
plants, it is often cracked into irregular large areas, as in fig: 9; 6, show- 
ing the pileus between. 
The inner veil is very thin and fragile, and disappears soon after 
the opening of the plant. When the plant is expanded the annulus is 
attached to the extreme upper end of the stem at the point of junction 
of the gills and stem, for the gills are adnexed, as in some other 
of Amanita, and the stem is not readily separable from the 
The plant is very fleshy, is often attacked by larvae, and readily ye 
so that transport of mature or nearly mature specimens is dificult. 
species 
pileus- 
