356 POLY POR ACE M Poria 



1605a. P. obliqua Achar. (from the oblique growth of the tubes) a c. 

 Sub. very thin ; marg. barren, sometimes recurved, forming a 

 narrow P. T. more or less elongate owing to oblique growth, 

 usually minute, ^ to \ in. long when not oblique, orange- 

 brown or cinnamon, sometimes of two strata. Flesh colour 

 of Po. 



Trunks, logs, rotting wood. 4 X 2\ x -^ in. Regarded as a species of Fomes 

 by Cooke and Saccardo. 



1606. P. umbrina Cooke (from its brown colour ; umbrinus, brown- 



coloured) a. 



Undulato-tubercular, full to dingy umber ; marg. smooth salmon- 

 or vermilion-white, paler than pore-surface. Sub. thin but 

 variable. T. somewhat long, varying. Po. minute, roundish, 

 unequal ; sienna. 



Trunks. 3^ in. Fomes umbrina Saccardo. 



1607. P. resupinata W. G. Sm., Boletus resupiuatus Bolt, (from its 



resupinate habit) a. 

 Undulato-tubercular, spongy-coriaceous, umber, yellowish vinous- 

 umber or ferruginous. Sub. thin fibrous. T. long, varying, 

 sometimes stratose. Po. minute, pore surface nodulose to 

 plane, umber. 



Broadly effused. Trunks, branches, hazel. Feb. 3§ in. This may be a 

 resupinate form of 1560 or 1561. Compare 1605a. Fomes resitpinata 

 Massee. 



1608. P. ferruginosa Karst. (from its rusty colour; ferrum, iron) 



a b c. 

 Undulato-tubercular, ferruginous or cinnamon ; marg. barren, 

 sometimes reflexed as a narrow P., ochre or rust colour, with 

 white mycelium at edges of new growths. Sub. thin but 

 varying. T. long, varying, sometimes 2-stratose or reduced 

 to ^V in. Po. medium to minute, brown. Myc. white to 

 ochreous. 



Imbricate, broadly effused. Trunks, branches, posts, sticks, abele, beech, 

 oak, pine, alder, bramble, sometimes on dead leaves ; common. Oct.- 

 May. 5^ in. At first appearing as a confervoid stratum. Fomes ferruginosa 

 Massee. 



1609. P. eontigua Karst. (from its close investment of sticks, etc. ; 



contiguus, continuous) a c. 



Somewhat plane, cinnamon or yellowish-sienna, dingy when old ; 



marg. barren. Sub. thin, from \ in. to a membrane. T. short. 



Po. somewhat large, brownish. Myc. ochreous. 



Effused, less so than in 1608. Trunks, branches, sticks, rotten wood, etc., 

 pines, sweet-gale, maple, hornbeam ; uncommon. 3 in. Sometimes 

 wholly investing branches. 



1610. P. violaeea Cooke (from its violet colour) a c. 



Plane, purple with marg. paler or whitish, or deep purplish to 

 crimson-brown, with marg. light or ivory, clouded rufous. 



