STEREUM. 



267 



LXXXVI. Stereum hirsntum. 

 Natural size. 



GENUS XLVI. Stereum (oreperfs, hard). (Pers.) Fr. Epicr. Stereum. 



P- 545- 



Hymenium definitely inferior, coriaceous, separated from the 

 fibrous-coated pileus by an intermediate fibrillose stratum, even, 

 remaining unchanged. Sporophores 

 4-spored ; spores minute, roundish- 

 ovate. Coriaceous or woody, mostly 



perennial, somewhat zoned, entire, \ 



definite in form. Fr. Hym. Eur. p. 

 638. 



I. MERISMA (v-eptfr, to divide). Pilei 

 very numerous, ascending, imbricated in a 

 free tuft. 



II. APUS (a, TTOUS, a foot). Pileus sessile, 

 at first resupinate, then commonly pileato- 

 reflexed or adnate behind, coriaceous, mar- 

 gin ate. 



* Hymenium smooth. 



*'* Hymenium simple, slightly bristly or 

 velvety. 



*** Woody, perennial, scarcely refexed, 

 but marginate, the hymenium stratose by 

 confluent pilei, at the' first pruinose. 



**** Rigid, the simple hymenium pruinose. 



III. RESUPINATA. Crustaceo-adnate, indeterminate, without a distinct 

 pileus, but at length admitting of being detached entire like a piece of leather. 

 Circumference not flaxy. Inc rusting wood. (Species of Subdivision II. (Apus) 

 occur in a resupinate state, but being limited (marginate) are from the first 

 distinct.) 



* True species, coriaceous. 



** Imperfect, crustaceo- adnate, sterile. 



I. MERISMA. 

 No British species. 



II.- APUS. Pileus sessile, at first resupinate, c. 

 * Hymenium smooth. 



1. S. ochroleucum Fr. Pileus hoary, coriaceous-membrana- 

 ceous, free, expanded, flaccid, silky, zoned. Hymenium even, 

 smooth, yellowish (or in var. grey). 



Commonly large, with zones of the same colour or fuscous. Coating of the 

 pileus here and there separating. 



On wood. Glamis, 1874. Jan. 



Name u>xp ? > pale yellow ; Aev*6s, white. Fr. Hym. Eur. p. 639. B. & 

 Br. n. 1818. S. Mycol. Scot. n. 856. 



