OF SOUTH AUSTRALIA. 
299 
CALVATIA Fries. 
(L., call'd^ a skull or soalji.) 
Peridium subglobose to i)yrlfonu, frequently witli a well-developed rooting 
base; of two layers, an outer exoperidiuru wliieli niav be warted, spinose, fur- 
furaeeous, granular nr smooth, and hakes away in irregular fragments; and an 
inner endoperidiuni wliie.li is thin, i>apyraeeous or membranous, and flakes awav 
irregularly from the apex, but persists towards the base; sterile base present, 
well developed or seanty. (fleba eoloure<l, of eapillitium and spores; eapillitium 
threads long, equal, sparingly bramdied, septate or eontinuous, attached to the 
inner walls of the endoperidiuni. Spores globose or shortly elliptical, continuous, 
coloured, rough or smooth. Solitary nr in small groups on the ground in pas- 
tures, sand-dunes or outskirts of the forest. — Cunningham. 
[Phofu. hii S. Tee. 
Figure 67. — liattnrrtd'a Stcridiu (Libosch.) (No. 482). 
Partly expanded plant. Adelaide Hospital Grounds. 
KEY TO THE SPECIES. 
Diaphragm present. 
Spores smooth Calvaiia caeiata. 
Spores verrueose 4811. C. lilacina. 
Diaphragm absent. 
Plants large, exoperiilium smooth, leathery . . . . 484. C. (jiganiea. 
Plants small, exoperidium furfuiaceous 485. C. Candida. 
