WHITE-SPORED AGARICS. 



67 



center, or of tawny olive in the center of other specimens. The 

 pileus is viscid, strongly so when moist. It is finely striate on the 

 margin, and covered with numerous, white, floccose scales from the 

 upper half of the volva, forming more or less dense patches, which 

 may wash off in heavy rains. The gills are rounded next the stem, 

 and quite remote from it. The edge of the gills is often eroded or 

 frazzly from the torn out threads with which they were loosely con- 

 nected to the upper side of the veil in the young or button stage. 

 The spores are globose 

 or nearly so, with a 

 large ** nucleus " nearly 

 filling the spore. 



The stem is cylin- 

 drical, even, and ex- 

 panded below into quite 

 a large oval bulb, the 

 stem just above the 

 bulb being margined by 

 a close fitting roll of the 

 volva, and the upper 

 edge of this presenting 

 the appearance of hav- 

 ing been sewed at the 

 top like the rolled edge 

 of a garment or buskin. 

 The surface of the stem 

 is minutely floccose 

 scaly or strongly so, 

 and decidedly hollow 

 even from a very young 

 stage, or sometimes 

 when young with loose 

 threads in the cavity. 



Figures 68-70, from plants (No. 3715, C. U. herbarium) collected 

 at Blowing Rock, N. C, during September, 1899, illustrate certain 

 of the features in the form and development of this plant. 



In Amanita frostiana the remains of the volva sometimes form a 

 similar collar, but not so stout, on the base of the stem. The varia- 

 tions in A. frostiana v^hexe the stem, annulus and gills are white 

 might suggest that there is a close relationship between A. frostiana 

 and A. cothurnata, and that the latter is only a form of the former. 

 From a careful study of the two plants growing side by side the 



Figure 69. Amanita cothurnata. Different stages opening up 

 of plant, the two center ones showing veil being ripped from 

 stem, but veil narrow The right-hand illustration has been 

 scratched transversely, these m^rks not being characteristic 

 of the plant (natural size). Copyright, 



