SECTION LIGNOSUS. 



Fig. 420 

 Lignosus sacer, the plant (reduced) and pore surface (natural size). 



faint, metallic zones. Context white. Pores medium, firm. This is 

 a rare species of Europe known only from the Alps and rare tin-re. 

 I have seen but three collections. First, at Berlin, collected by Morthier 

 at Neuchatel and determined as "triqueter, Fr." Second, sent t<> r.ie 

 by Dr. Butignot, Switzerland, and third, in the herbarium of I'.otidier. 

 also from Dr. Butignot (and labeled Trametes Ilutignotii, not pub- 

 lished?). In its context, color, and pores it closely resembles I'oly- 

 porus benzoinus (a sessile species). It was named Polyporus ni^'Mi^ 

 by Trog, then changed to Polyporus Trogii by Fries (Cfr. Sacc. 6, 82) 

 but when Fries published it, Hym. Eur. p. 536, he called it Polyporus 

 corrugis. Xo type exists in Fries' herbarium, nor I am told in that 

 of Trog. 



