STEREUM. 271 



On bark of Scotch fir. Glamis. Aviemore. Stereum. 



Name pinus, pine. Ft: Hym. Eur. p. 643. B. 6^ Dr. n. 1579. S. Mycol. 



Scot. 71. 864. 



14. S. rufum Fr. Rufous, becoming fuscous, coriaceo-cartila- 

 ginous, erumpent, tuberculiform then somewhat round, margijiate, 

 smooth beneath. Hymenium grey-pruinose, at length bullate- 

 tubercular. 



Wholly immarginate when young. 



On dead pine and ash. Glamis, 1874. Sept.-March. 



Name rufus, rufous. Fr. Hym. Eur. p. 644. Elench. p. 187. B. & Br. 

 n. 1580. -S. Alycol. Scot. n. 865. Sow. t. 338. f. 2. 



III. RESUPINATA. Crustaceo-adnate, indeterminate, c. 

 * True species, coriaceous. 



15. S. stratosum B. & Br. Effused, bright ochraceous-white, 

 smooth, becoming yellow, here and there wrinkled. 



Substance pallid, stratose, the strata at length broken up. 

 Habitat not recorded. Penzance. 

 Name stratum. Stratose. B. & Br. n. 2027. 



** Imperfect, crustaceo-adnate, sterile. 



16. S. acerinum (Theleph. acerina Pers.) Crustaceo-adnate, 

 even, smooth, white. 



Effused like the crust of a lichen. It must be sought for in a perfect con- 

 dition on fallen trunks. When young it is continuous and somewhat pruinose. 

 Name acer, maple. Pers. Syn. p. 581. Fr. Hym. Eur. p. 645. Syst.Myc. 

 */ 453- Berk. Out. p. 271. C. Hbk. n. 915. 



GENUS XLVIL Auricularia (auricula, the ear). Bull. Auricuiaria. 

 Champ, p. 277. sp. i. Fr. Epicr. p. 555. 



Hymenium definitely inferior, remotely and irregularly costato- 

 plicate, swelling and becoming gelatinous and tremulous when 

 moist, collapsing (and coriaceous Epicr.} when dry. Habit exactly 

 that of Stereum. 



Intermediate between Thelephorei and Tremellini ; nearest in 

 affinity to the former, when dry scarcely to be distinguished from 

 Stereum; departing from the Tremellce in the coriaceous pileus. 

 Fr. Hym. Eur. p. 645. 



