

YORK 



. ■. r-, I,- pj 



THE MYCOLOGIC FLORA OF THE MIAMI VALLEY. 



By a. p. Morgan. 



[Poi.vroRKi, — Concluded.] 



Genus in. TR AMETES,.Fr. 



Pores .subrotund, obtuse, entire, often uneciual in dejjth, sunk 

 into the substance of the pileus; the trama, Iience, contiguous and 

 similar with the substance of the pileus. 



Fungi lignatile. 



a. Pons small or minute. 



* 



1. T. SCUTELLA.TA, Schw. Pilcus corky, dimidiate and sub- 

 ungulate, or more commonly suborbicular, and attached by the 

 apex, white then brown and blackish, Hymenium concave, white- 

 pulverulent, with a somewhat elevated sterile margin : pores long, 

 punctiform, with very thick obtuse dissepiments. 



On stumps and old dry trunks, the scutellate form especially 

 on the underside of rails in fences ; common. Scarcely exceeding 

 an inch in breadth, and usually about half an inch. The dimidiate 

 pileus becomes rugged and uneven, and changes to brown and 

 blackish, retaining, however, the white margin ; sometimes con- 

 centric furrows and folds are found upon it. There are all stages 

 between the dnnidiate and the scutellate forms. The pores aver- 

 age about .22 mm in diameter, but the dissepiments, which are 

 always included in the average, are as broad as the pores. This is 

 the T. 0/iiens/s, Berk. 



