198 FUNGUS-FLOBA. 



conditions of Polystictus and Fames ; however, until evidence 

 is forthooming, suoli must be considered as entities. 



ANALYSIS OF TEE SPECIES OF POBIA. 



I. Pores persistently white, or becoming pallid or pale 

 ochraceous when dry, hut never assuming bright tints. 



II. Pores white, changing to brown, green, red, or some 

 colour other than pallid or ochraceous when dry. 



III. Pores white, with a more or less decided tinge of red 

 or flesh-colour when growing. 



IV. Pores when growing, bright yellow, ochraceous, or 

 honey-colour. 



V. Pores, umber, rufous, brown, purple, flesh-colour, or 

 cinnamon. 



J. Pores persistently whitish,. 



Poria vaporaria. Fr. 



Broadly effused, thin, inseparable, the white mycelium 

 penetrating the matrix ; pores large, angular, white then 

 cream-colour, forming a continuous stratum. 



Polyporus vaporarium. Fries, Syst. Myc. i. p. 382 ; Stev., 

 Brit. Fung., p. 219. 



On dead trunks, branches, &c. Often broadly effused, 

 inseparable, pores very variable, large, angular, often ir- 

 regularly torn and more or less oblique, appearing as if 

 sunk into the matrix, usually bark, whitish or pallid, 

 becoming pale ochraceous when dry. Pores often reach- 

 ing 1 mm. in length. 



Var. secernibilis, B. & Br., Ann. Nat. Hist., n. 1022 ; 

 Stev., Brit. Fung., p. 219. 



White, honey-colour when dry, separable from the matrix. 



On fir leaves under moss. 



Poria moUusca. Fr. 



Effused, thin, soft, white, margin fibrillose, radiating ; 

 pores short, minute, roundish, very thin and unequally torn, 

 occupying the central portion of the patch or here and there 

 in scattered clusters, \-^ mm. diameter. 



Polyporus molluscus. Fries, Syst. Myc. i. p. 384; Stev., 

 Brit. Fung., p. 218. 



