606 PORIA 



III. Effused, dry, tough; pores rather large, rigid, roundish, angular. 

 *Pores whitish, or greyish brown. 



2028. P. corticola Fr. Cortex, bark; colo, I inhabit. 

 P. 2-8 cm., white, becoming pale, widely effused, equal, firm, 



smooth; mycelium forming a bare, xylostramatoid layer. Pores whitish, 

 very minute, superficial, often obsolete, punctiform. Bark of poplar, 

 beech, willow, oak, birch, and fir. Rare. 

 P. sinuosa Fr. = Trametes sinuosa (Fr.) Quel. 



2029. P. subfusco-flavida (Eostk.) Massee. Rostk. Polyp, t. 27, fig. 11, 

 as Polyporus subfusco-fiavidus Rostk. 



Subfuscus, somewhat dusky ; fiavida, yellowish. 

 P. 630 cm., white, then light yellow fuscous, broadly effused, be- 

 coming confluent, thin, coriaceous, arid, adnate; margin white, byssoid, 

 determinate, thin. Pores greyish brown, or whitish, minute, irregular. 

 Dead oak wood, and planks. Rare. 



**Pores brown, or cinnamon. 



2030. P. obliqua (Pers.) Quel. (= Fomes obliquus (Pers.) Fr.) Fr. 

 Icon. 1. 188, fig. 1, as Polyporus obliquus Fr. Obliqua, slanting. 



P. 5-10 cm., pallid, then date brown, becoming blackish, widely 

 spreading, throwing off the bark, very thin, coriaceous corky ; margin 

 often refiexed, wrinkled, and laciniate. Pores brown, 2-5 mm. long, 

 extending to the wood, pervious to the base, often oblique; orifice of 

 the pores grey, glistening, very small, obtuse, subpentagonal, some- 

 times obscurely stratose. Spores white, globose, 4-5/z. Trunks, and 

 dead branches, under the bark, especially beech. Sept. Oct. Un- 

 common, (v.v.) 



P. ferruginosa (Schrad.) Fr. = Fomes ferruginosus (Schrad.) Massee. 

 P. resupinata (Bolt.) W. G-. Sm. = Fomes resupinatus (Bolt.) Massee. 



2031. P. contigua (Pers.) Fr. Contigua, touching together. 

 P. 6-8 cm., cinnamon, becoming dingy, effused, firm, 12 mm. thick, 



smooth, submarginate; margin at first villose; mycelium ochraceous. 

 Pores cinnamon, rather large, round, equal, obtuse, entire. Spores 

 "cylindrical, hyaline, often 1-guttulate, 5-7 x 3-3-5/n" Sacc. Rotten 

 wood, and sticks. Sept. Oct. Uncommon. 



2032. P. laevigata Fr. Laevigata, made smooth. 

 P. 2-6 cm., cinnamon, broadly effused, coriaceous rigid, determinate, 



not marginate, separating when old, smooth, very glabrous, with a rigid 

 cuticle underneath, 1-2 mm. thick. Pores cinnamon, very minute, 

 round, entire. Spores white, "3-5 x 3-4 p. Cystidia like those in Fomes 

 igniarius " Romell. Fallen birch branches. Nov. Uncommon, (v.v.) 



