IO 



ORDER II. GASTEROMYCETES 



Hymenium concealed within a peridium until the spores are 



mature (fig. 9). Families VII-XI 



Fig. g. Basidia and spores of Sderoderma vulgare Fr. 

 B, basidia ; SH, spores ; ST, sterigmata. X 400. 



VII. PHALLOIDACE^E. Pileus and stem or latticed receptacle at first 

 enclosed in a globular peridium with a gelatinous stratum. 

 Peridium at length opening at the apex and the gleba 

 extended on a stem or lattice. Genera 107-110 



VIII. LYCOPERDACE^E. Peridium globular, with a capillitium; at 

 length opening for the dispersion of the spores. 



Genera 111-116 



IX. SCLERODERMACE^E. Peridium globose, thick, without a 

 capillitium, dehiscing irregularly. Genera 117-118 



X. NIDULARIACE/E. Peridium bell- or cup-shaped, containing 

 compressed or globose peridiola which become free at 

 maturity. Genera 119-122 



XI. HYMENOGASTRACE^E. Subterranean, peridium without a capil- 

 litium, indehiscent. Genera 123-128 



