NATURAL HISTORY SURVEY 125 



Stem eccentric or lateral, very short or obsolete. Pileus 2.5 

 to 5 cm. broad; spores oblong, 12 x 7 /a. 



On dead prostrate trunks and branches, particularly of hickory. 

 Frequent. May to August. Mr. Murrill in Bull. Torr. CI. 31: 327, 

 transfers it to the genus Hexagona. 



MERULIUS. 



Pileus generally resupinate, sometimes with free upturned 

 edges or even dimidiate, soft; hymenium waxy, spread over 

 shallow pits and obtuse reticulate folds which ultimately form 

 more or less distinct, tortuous, denticulate pores. 



Merulius tremellosus Schrad. 



White, resupinate then free or reflexed, fleshy-tremellose, 



tomentose, margin radiate-dentate; folds various, ruddy. 



On the underside of rotting logs; autumn. Appearing at first 

 in orbicular patches which are pure white, then pink tinged with 

 flesh-color towards the center. As the plants mature, the pore 

 areas become reddish, the thin radiate border remaining white. 

 Spores white, oblong, curved, slightly constricted in the middle, 

 4 to 5 x 1.5 fx. The fungus is often extensively effused, covering 

 areas 2 or 3 dm. in diameter. In exposed situations, as upon tin' 

 sides of logs and stumps, it breaks up into more or less concres- 

 cent, imbricate, subdimidiate pilei, whose upper surfaces are 

 white or pallid, and whose margins are more or less deflexed. 



POROTHELIUM. 



Resupinate, somewhat membranaceous, producing papillae 



which are at first distinct and closed, soon opened in the form 

 of pores, at length elongated and tubular. 



Porothelium fimbriatum Fr. 



Effused, membranaceous, tenacious, white, the border with a 

 fringe of terete laciniae. 



Warts of the pores hemispherical, at first and on the border 

 distinct, afterward confluent in the middle. 



I nderside of decaying logs. Glencoe. River Forest. Harper. 



SOLENIA. 



Plants growing in dense clusters, mostly short-tubular, tubes 

 somewhat cylindrical, distinct and free from one another, definitely 

 facing the ground, mouth narrowed. 



Plants cylindrical, white S. Candida. 



Plants scattered, clavate-cylindric, ochraceous. . .S. ochracea 

 Plants crowded, pyriform, dingy-ochraceous or 



ferruginous . . . S. anomala. 



Solenia Candida Pers. 



Sparse, cylindrical, glabrous, white. 



On partially buried sticks, border of swamp, Millers, Indiana. 

 Harper. 



