VEGE TA TI I 'E REP ROD UCTION. 



219 



The body of the fructification is made up of hyphse, more 

 or less interlaced and adherent, and is of a form adapted, not 

 only to break through the substratum, but also to furnish an 

 extensive surface for the spore-beds, called in these plants the 

 hymenium (fig. 213). The hymenium consists of the enlarged 



FIG. 215. 



FIG. 215. A fructification of Clavaria 

 a urea. The hymenium covers the 

 upper p^rt of the branches. Natural 

 size. After Kerner. 



FIG. 216. 



FIG. 216. A fructification of a mushroom, Amanita fhalloides. /, the cap or pileus ; 

 v, the veil, originally connected with edge of cap, covering the gills which radiate from 

 the stipe, st, to the edge of cap ; vo, the volva. The surface of the gills is covered 

 with the hymenium. Most mushrooms showing a distinct volva are poisonous. 

 Natural size. After Kerner. 



free ends of the hyphae, which are set at right angles to the 

 surface. Some, the basidia, develop 2-8 slender branches 

 each of which produces at the tip a single spore. The hyme- 

 nium may be formed upon the outer surface of the fructifica- 

 tion or in internal chambers (fig. 214). In the latter case 



