STEREUM. 271 



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



Name— /f«w, 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, tuberculiform then somewhat round, margifiate, 

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

 tubercular. 



Wholly immarginate when young. 



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



Name — ruf?is, rufous. Fr.Hym. Eur. p. 644. Elench. p. 187. B. & Br. 

 n. 1580. S. Mycol. Scot. n. 865. — Sow. t. 338./. 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 — sti-atum. 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 XLVII. — Auricularia {auricula, the ear). Bull. Auricuiaria. 

 Champ, p. 277. sp. 1. — 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 Tremella in the coriaceous pileus. 

 Fr. Hym. Eur. p. 645. 



