406 THELEPHORACE^E Stereum 



1813. S. vortieosum Fr. (from a fancied resemblance in the habit 



to waves in a vortex or whirlpool) a b. Coriaceous. 



P. effuso-reflexed, imbricate, obscurely zoned, rugose, strigose, 

 crisped, pale buff; marg. white. Hym. smooth, somewhat 

 ribbed, salmon, or purplish-salmon, sometimes orange shaded. 



Beech. 4! in. Intermediate between 1806 and 1808. 



1814. S. rufum Fr. (from the rufous pileus) a b c. Rigid, coriaceo- 



cartilaginous. 

 P. effuso-reflexed, rugose-rough, deep vinous-brown, with pale 



yellowish marg. and white edge. Hym. minutely cracked, 



grey-pruinose. 

 Dead pine, ash, poplar. Sept.-Mar. 3^ in. Effused and immarginate 



when young. 



b. Resupinata. 



1815. S. Pini Fr. (from the habitat, pine bark) a b c. 

 Coriaceous-cartilaginous, adnate as a shield, marginate, smooth 



beneath, at length bullate. Hym. noduloso-rough, purple 

 flesh-colour, then fuscous, deep sienna or deep vinous-brown. 

 On Scotch fir. Nov. 3^ in. Sometimes identical in colour with the pine 

 bark and easily overlooked. 



1816. S. frustulosum Fr. (from the habit, breaking to fragments; 



frustrum, a piece) a c. 

 Woody, tubercular, thick, crowded and subconfluent, breaking to 



fragments, smooth beneath, and at the obsoletely marginate 



circumference. Hym. convex, pruinose, blackish-brown, 



cinnamon, becoming salmon. 

 Wood and bark, oak, beech, branches, hard to rotten sticks. 2^ in. ; 



frustules & x & in. 



1816a. S. quereinum Potter (from the habitat, oak, quercus] a. 



Coriaceous, at first filling in between crevices of bark. Hym. 

 slightly papillose, young examples with a central papilla, pale 

 buff, becoming cinnamon-whitish; marg. slightly raised from 

 matrix, dark brown, finely zoned beneath, edge lighter. 

 Abundant white mycelium in and under bark. 

 Oak bark. Jan. -Nov. 2f X i in. 



1817. S. aeerinum Fr. (from its usual habitat, maple branches ; oar, 



maple) a b c. 

 Crustaceous, adnate, effused, even, usually smooth, sometimes 



minutely nodulose or rugoso-rough, often transversely cracked, 



white, pale brownish- white or ivory. 

 Maple, fir, juniper, elm. Dec. 4jin. A slight repand hirsute pale-yellowish 



margin or pileus is sometimes developed. 



1818. S. stratosum B. Br. (from the stratose habit) a. 



Stratose, the pallid strata at length separating, effused, smooth, 

 here and there wrinkled, bright ochreous-white, becoming 

 yellow. 



31 in. 



