POLYPOREI. 253 



1. T. pini, Ft'.; pilcus corky, hard, pulvinatc, concentri- 

 cally sulcatc, cracked and pitted, rough, ferruginous-brown, 

 then black, tawny-ferruginous within ; pores large, roundish 

 or oblong, yellow, inclining to red-brown. 



On pine-trunks. Rare. Scotland, Klotzsch. 



2. T. suaveolens, Fr. ; pileus corky, rather soft, pulvinatc, 

 villous, zoncless, white ; pores round, rather large, obtuse, 

 white, inclining to brown. — Huss. i. t. 43. 



On willows, liraes, etc. Not common. Bristol, Dr. Ste- 

 phens, etc. King's Cliffe. Smell like that of aniseed. 



3. T. odora, Fr. ; pileus corky, elastic, uneven, gradually 

 becoming smooth, zoneless, pallid ; pores minute, round, equal, 

 dirty- white, inclining to ochre. — Bolt. t. 162. 



On willows. Rare. Bristol, Dr. Stephens. Very nearly re- 

 lated to the last. It has the same smell. 



4. T. gibbosa, Fr. ; dirty-white ; pileus corky, villous, ob- 

 soletely zoned, extended behind and gibbous ; pores linear, 

 straight, equal. — Sow. t. 194; Huss. ii. t. 4. 



On gate-posts, stumps, etc. Rare. Bristol, C. E. B. Re- 

 sembles somewhat thick specimens of Lenzites betulina. Very 

 variable, however, in thickness. Always truly porous, though 

 the pores are elongated. Sowerby's plant grew at the foot of 

 a poplar. 



thin, of the same structure with the hymenophorum. Tliese, however, are not 

 closely alhed to Trametes, and have been separated by Fries under the generic 

 name of Polystictus, the technical character berag derived from the fact that 

 the pores, winch are developed in a centrifugal direction, are perpendicular to 

 the fibrillose stratum above the hymenophorum, whereas in Trametes the 

 hymenophorum is not distinct from tlie rest of tjlie pilous. I liave retahied for 

 the present the arrangement proposed by Fries in the ' Epicrisis,' though the 

 genus Polystictus wiU, in all probability, be ultimately adopted. No incon- 

 vcuience is likely to arise, as the genus Trametes includes so few British 

 species. 



