308 



C. Lignosura, perenne, vix reflexum, sed marginatura, 

 hymenio confluenti-stratoso, primitus pruinoso. 



6. St. frustulosum Fr. Epicr. Syst, myc. p. 552. 

 Lignosum, resupinatum, tuberculosum, stipatum et qvasi 



confluens, inde frustuloso-diffraclum appareus, subtus et am- 

 bitu obsolete marginato glabrum, spadiceo-nigricans. Hyme- 

 nium convexum, e cinnamomeo expallens, pruinosum. 



Syu. Thelephora frustulata Pers. Sjn. Fung. p. 577. Fr. Syst. 

 myc. I, p. 445. Stereum frustulosimi Fr. Hym. eur. p. 643. 



Hab. Ad ligna Qvercus durissima in insula Runsala 

 prope oppid. Abo passim. Perenne. 



Substantia lignea coloreqve facile distincta species. Sporae el- 

 lipsoideo-sphaeroideae, hj-alinae (sub lente), longit. 4 — 5 mmm., 

 crassit. 3 — 4 mmm. 



D. Rigida, hymenio simplici, pruinoso, 



7. St. rugosura Pers. Disp. p. 30. 



Pileus suberosus, rigidus, effusus breviterqve reflexus, 

 obtuse marginatus, demum glaber, spadiceus. Hymenium 

 impolitum, pruinosum, tritum subcruentatum, lutescens vel 

 rarius cinereo-lividum. 



Syn, Thelephora rugosa Pers. Syn. Fuug. p. 569. Fr. Syst. 

 myc. I, p. 439. Stereum rugosmn Fr. Hym. eur. p. 643. 



Exsicc. Karst. Fuug. Fenn. 249, 



Hab. Ad truncos arborum frondosarum, potissimum 

 CoryU, Alni et Qvercus in tota Fennia et Lapponia rossica 

 vulgatissimum. Persistens. 



8. St. abietinum (Pers.) Fr. Epicr. Syst. myc. p. 553. 

 Pileus suberoso-coriaceus, rigidus, eftusus, applanatus, 



subtus subtomentosus, ferrugineo-umbrinus. ambitu determi- 

 nato. Hymenium velutino-pruinatum, fusco-ferrugineum, ex- 

 pallens. 



