STEKEUM. 133 



Stereum rugosum. Fr. 



Broadly effused, sometimes shortly reflexed, coriaceous, at 

 length thick and rigid, pileus at length smooth, brownish ; 

 hymenium pale greyish-yellow, changing slightly to red 

 when bruised, pruinose ; spores cylindrico-elliptical, straight, 

 11-12 x 4-5 ,*. 



Stereum rugosum, Fries, Epicr., p. 552 ; Mass., Mon. TheL, 

 p. 191. 



TMephora lauro-cerasi, Berk., Engl. Fl. v. p. 173. 



On trunks, &c. Very variable in form, wholly adnate, 

 partly reflexed, or pezizaeform. Agrees with S. sanguino- 

 lentum in becoming red when bruised, but differs in the 

 thicker, rigid substance, and in the larger, straight spores. 

 The hymenium is sometimes pale-yellow, at others pale- 

 greyish and livid. 



Stereum spadiceum. Fr. 



Coriaceous, thin, effuso-reflexed, villous, subferruginous, the 

 obtuse margin whitish ; hymenium smooth, brownish flesh- 

 colour, becoming red when bruised ; spores elliptical, 8 x 5 /*. 



Stereum spadiceum, Fries, Epicrisis, p. 549 ; Mass., Mon'. 

 Thel., p. 190. 



On trunks, &c. Distinguished amongst the species that 

 turn red when bruised by the dark colour of the hymenium. 



Stereum discifprme. Fr. 



Subcoriaceous, white, resupinate, determinate, the thin 

 margin free, naked, disciform ; the hymenium rigid, uneven, 

 pulverulent, pallid ; spores subglobose, 16-18 p. or 18 X 

 15-16 /A. 



Stereum disciforme, Fries, Epicr., p. 522; Mass., Mon. 

 Thel., p. 189. 



Peniophora disciforme, Cke., Grevillea, viii. p. 20, t 122, 

 f. 2. 



On oak. Forming patches from ^ to 1 in. across, firm and 

 rigid. 



Stereum vorticosum. Fr. 



Pileus coriaceous, effuso-reflexed, obscurely zoned, coarsely 

 hirsute, pallid, margin similarly coloured ; hymenium slightly 

 rugulose, purple or lilac ; spores elliptical 7 x 4 fu 



Stereum vorticosum, Fries, Obs. ii. p. 275; Mass., Mon. 

 Thel., p. 194. 



