BASIDIOMYCETES. 



175 



and capillitia. G. coliformis has several apertures in the inner peridium. The 

 other species have only one regular aperture at the apex. G. striatits has a 

 pedicellate inner peridium, with conical, striped peristome. G. fornicatus has 

 an external peridium split into four segments. This last and several other 

 species produce " mycorhiza " on the roots of Conifers. 



ff 



FIG. 181. I Hynienogaster c'drimis (nat. size) ; II longitudinal section through H. tener 

 ( x 5) ; III portion of a section of H. caloxporus ; g a chamber ; h hymenium ; sp. spores; 

 t trama (x 178) ; IV Rliizopogon litieulus (nat. size); V Scleroderma vulgare, VI section of V ; 

 VII basidia with spores belonging to the same Fungus. 



Order 3. Sclerodermatacese. Capillitium wanting. The 

 peridium is simple and thick, gleba with round, closed cham- 

 bers, which are filled with basidia. 



Scleroderma has a corky peridium. The fruit-bodies commence their develop- 

 ment under ground. S. vulgare (Fig. 181 V-YIIJ, has a hard, slaty-black gleba. 



