10 FUNGUS-FLOEA. 



SCLEEODERMEAE. 



Scleroderma. — Surface of peridium with persistent warts 

 or granules. 



Polysaccum. — Surface of peridium smootli. 



NiDULAEIBAE. 



Cyathus. — Peridiola several, umbilioate, attached by a cord 

 to wall of peridium. 



Crucibulum. — ^Peridiola several, not umbilioate, attached 

 by a cord to wall of peridium. 



Nidularia. — Peridiola several, not attached by a cord to the 

 peridium. 



Sphaerobolus. — Peridium globose, containing a single 

 sporidiolum. 



Thelebolus. — Peridium sessile on a broad base, containing 

 a single peridiolum. 



Lycoperdeae. 



* Stem absent, or very thick and continuous witli the peridium. 



Lycoperdon. — Exoperidium either in the form of warts, 

 spines, or flaking off in patches ; sterile base either 

 present or absent. 



Geaster. — Exoperidium splitting in a stellate manner. 



** Stem elongated, slender. 



Tulostoma. — ^Peridium subglobose. 



Battarrea. — Peridium vertically compressed. • 



Phalloideae. 



Ithyphallus. — Pileus reticulated, free and sheathing the 

 apex of the stem-like receptacle, 



Mutinus. — Pileus adnate to the apex of the long stem-like 

 receptacle. 



Clathrus. — Eeceptacle forming a hollow net. 



