Tlie Mycologic Flora of Miami Valley, Ohio. 169 



A. Pores colored. 

 a. brmvn or blackish. 



63. P. SPissus, Fr. Widely effused, perennial, \ery hard, immersed, 

 cinereous-brown ; the margin very narrow, infiexed. 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. OHi.iQUUS, Pers. Widely aml)ient, annual, hard, very thick, 

 uneven, pallid then brown and bhu kish ; commonly encircled with an 

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



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

 woody texture, very thick and uneven, and in its perfecdon 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 obliiiue pores 

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

 The pores ait 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., Ijut tlu- latter are very thick. 



65. P. N'KiKK, licrk. ICffused, liard, rather thick, even, black; 

 the border slightly raised, jjubescent, dark brown. I'ores minute, round, 

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



On rotten trunks; rare, l^longalcd and altogether resu])inate e\ce]:»t 

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

 the substance where it is not (|uite obsolete, dark brown. Insidi' of the 

 tubes dark brown but the h\-neniuni jet black. 



66. I'. uNiTiis, Pers. Effused, even, firm, dry, Ijright brown ; the 

 Ijordrr thin, depressed, concolorous. T*ores very small, thin, angular, 

 acute, une(|ual. 



In wo(k1s on old branches; rare. The whole fungus composed of a 

 thin stratum of |)ores closely adnate to the wood and of a uniform clear 

 ])rown color throughout. The pores themselves are larger than in the 

 preceding species but the dissepiments are \er\ thin so that the average 

 diameter is about the same, . i 7 mm. 



/'. frrntij^iiioiis or ciiiiiamon. 



67. P. 1 i.KKLGi.No.sus, Sclirad. Effu.sed, tiiic k, firm, uneven, 



