PORIA. 205 



On stumps, and running on the ground. Pores 2-3 mm. 

 long, openings rather irregular, averaging about ^- mm. across. 



Poria terrestris. Fr. 



Effused, very thin, composed of delicate byssoid hyphae, 

 white, evanescent ; pores central, very minute, white, then 

 rufescent. 



Polyporus terrestris, Fries, Syst. Myc. i. p. 383 ; Sacc., Syll. 

 vi. n. 6150; Stev. Fung., p. 216. 



On the ground or on rotten wood in close damp places. 

 Very thin, almost disappearing when touched. Pores 

 angular, very shallow, about ^ mm. across. 



Poria cincta. Berk. 



White, turning pallid, forming small, erect, scattered 

 tufts, each tuft encircled by radiating strigose fibres ; pores 

 exceedingly minute, pallid ochraceous, darker when dry, 

 angular dissepiments very thin, minutely toothed at the edge ; 

 spores subglobose, colourless, 4-5 p.. 



Polyporus cinctus, Berk., Outl., p. 250 ; Stev., Brit. Fung., 

 p. 215. 



On old deal boards. Some of the patches are barren, and 

 some at length become confluent. Under favourable circum- 

 stances a distinct hymenium, 1^ line thick, with a free, 

 even, abrupt, vertical circumference, is formed in the centre 

 of each tuft. Pores so minute as to be scarcely visible to the 

 naked eye. The colour of the whole plant is pale ochraceous, 

 more or less tawny when dry. (Berk.) 



Tubes two lines long, pores ^^ mm. across. Whole 

 fungus brown and rigid when dry. 



Poria subgelatinosa. B. & Br. 



Orbicular, margin raised, subgelatinous, whitish tomen- 

 tose, becoming blackish; pores grey, small, edge of .the 

 dissepiments acute, entire; spores colourless, broadly ellip- 

 tical, 4x2- 5-3 p.. 



Polyporus subgelatinosus, B. & Br., Ann. Nat. Hist., n. 1569 ; 

 Stev., Brit. Fung., p. 216. 



On dead wood, parasitic on Polyporus amorphus. 



This singular species forms little pulvinate masses, with 

 an obtuse raised border, which is at first tomentose and 

 pallid, of a subgelatinous consistence, and. turning black. 



