STEREUM. 271 



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



pinus, pine. Fr. Hym. Eur. p. 643. B. & Br. n. 1579. S. MycoL 

 Scot. n. 864. 



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

 ginous, erumpent, tuberctiliform then somewhat round, marginate, 

 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. Eknch. p. 187. B. & Br. 

 n. 1580. 5. Mycol. Scot. n. S6$.Sow. t. 338.7. 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. 

 \.p. 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 Tremelltz in the coriaceous pileus. 

 Fr. Hym. Eur. p. 645. 



