192 ELVELLACEI. 



P. (Dermatea) furfuracea. 



Sessile, between fleshy and coriaceous, externally pallid, 



mealy, margin rolled in ; disc dark brown. 



Common on alder branches. You need not look for them before 

 October, when there is quite an abundance. 



Genus VI. HBI/OTIUM. Fr. 

 Disc always open, dilated, convex or concave, naked. 



H. seruginosum. Fr. Green Helotium. 



Whole plant verdigris green, head small, turbinate, myce- 

 lium green. 



This plant has different names ; Fries at one time took it for a Peziza and 

 called it Peziza aeruginosa. Tulane called it Chlorosplenium aeruginosum. 

 The mycelium stains the wood to a beautiful green. The fully developed 

 specimen is very rare. On oak. The mycelium stage is common in the 

 Valley. 



H. lutescens. Fr. Yellowish Helotium. 



Yellowish, small, sessile, or attached by a very short stipe. 

 Common on half-decayed branches lying in a damp place. 



H. citrinum. Fr. Lemon-colored Helotium. 



Head small, crowded, concave. 



Sporidia oblong, elliptic. 



Common on willow twigs lying in a moist place. 



Genus VII. BUIvGARIA. Fr. 



Receptacle orbicular, glutinous within, at first closed ; 

 hymenium even, persistent, smooth. 



B. inquinans. Fr. 



Cup-shaped, firm, rugulose, light umber, disc dark. 



Asci long ; sporidia large, brown. 



Common on rotten branches all through the Valley. 



