﻿The Mycologic Flora of Miami Valley, Ohio. 



169 



A. Pores colored. 

 a. brown or blackish. 



63. P. spissus, Fr. Widely effused, perennial, very hard, immersed, 

 cinereous-brown ; the margin very narrow, inflexed. Pores minute, ang- 

 ular, obtuse, entire. 



In woods on the underside of hard trunks and branches, such as 

 Hickory; common. Of a hard woody texture and sometimes effused to 

 an extent of many feet ; in specimens more than a year old, the annual 

 strata are very distinct. The pores are brown within but the mouths are 

 cinereous; they measure .16 mm. in average diameter. 



64. P. OBLIQUUS, Pers. Widely ambient, annual, hard, very thick, 

 uneven, pallid then brown and blackish; commonly encircled with an 

 erect crested border. Pores long, oblique, minute, obtuse, angular. 



On dead standing trunks of Ironwood (Ostrya); not common. Of a 

 woody texture, very thick and uneven, and in its perfection of the elegant 

 chocolate-brown color that Mr. Berkeley speaks of in the Cuban Fungi. 

 The growth does not decorticate the Ostrya but the long oblique pores 

 penetrate to the wood and seem to involve the bark in their substance. 

 The pores at first are lined with a minute whitish down which gives the 

 pale color to the surface ; their average diameter, including the dissepi- 

 ments, is .18 mm., but the latter are very thick. 



65. P. nk;er, Perk. Effused, hard, rather thick, even, black; 

 the border slightly raised, pubescent, dark brown. Pores minute, round, 

 thin, umber within, the mouth very minutely black-tomentose. 



On rotten trunks ; rare. Elongated and altogether resupinate except 

 at the very edge, where it is slightly raised, dark brown and pubescent; 

 the substance where it is not quite obsolete, dark brown. Inside of the 

 tubes dark brown but the hynenium jet black. 



66. P. unitus, Pers. Effused, even, firm, dry, bright brown ; the 

 border thin, depressed, concolorous. Pores very small, thin, angular, 

 acute, unequal. 



In woods on old branches ; rare. The wiiole fungus composed of a 

 thin stratum of pores closely adnate to the wood and of a uniform clear 

 brown color throughout. The pores themselves are larger than in the 

 preceding species but the dissepiments are very thin so that the average 

 diameter is about the same, . 1 7 mm. 



b. ferruginous or cinnamon. 



67. P. ferruginosus, Schrad. Effused, thick, firm, uneven, 



