Hydnangium 



HYMENOGASTRACE^E 



489 



CXXV. HYDNANGIUM Wallr. ex Klotzsch. 



(From the tuberous form ; Gr. hudnon, a tuber or truffle, 

 aggeion, a vessel.) 



Peridium fleshy or membranous, smooth or silky; sterile base not 

 developed. Trama vesicular, cells minute, unequal, at first empty 

 then filled with globose or ovate, echinulate spores. Spores 2-4. 

 (Fig. 142.) 



Fig. 142. A, B, Hydnangium carot&color Berk., entire and in section. X |. 

 c, basidium and spores. X 660. D, basidium and spores of H. camcum Wallr. X 660. 



The globose or ovate, usually small spores and the absence of a 

 sterile base separate Hydnang'mm from its nearest ally Octaviania. 



Species 2104, 2105 



2104. H. earotseeolor Berk, (from the carrot-like colour; carota y 



carrot) a b c. 

 Globoso-oblong or oblong-rounded, nodular, rootless. Pe. thin, 



slightly tomentose, carrot-red, becoming dark orange-brownish 



when dry. Gl. orange. 

 Sometimes half-exposed, often superficial. Woods, downs, under trees. 



Aug.-Jan. Diam. i&in. 



2105. H. earneum Wallr. ex Klotzsch (from the flesh-colour ; carneus, 



of flesh) a b c. 

 Irregularly subglobose or rounded-elongate, rootless; Pe. very 



thin, at first covered with white fugacious down, flesh-colour, 



becoming ochreous-salmon when dry. 

 Subterranean or half-exposed, often superficial. Above the roots of 



Eucalyptus, etc. Oct. -Dec. Diam. f in. 



