POLYI'OREI. 299 



4. D. cinerea, Fr. ; H-S in.; perennial; stratose ; pileus 

 cinereous^ corky-woody, thick, somewhat undulated, zoned, 

 tomentose ; pores minute, obtuse, entire, some round, others 

 very long, labyrinthiform, flexuous, intricate, white, or ciner- 

 eous. — Fr. Icon. 1. 182,/. 2. 



On trunks. Penzance. 



** Coriaceous, dimidiate, sessile. 



5. D. unicolor, Fr. (p. 254). Epping Forest. 



*** Eesujnnate. 



6. D. latissima, Fr. (p. 54.). 



7. D. vermieularis, P. ; 4-6 in., flesh-colour-refu;icent ; 

 broadly effused, thin, becoming even ; sinuses short, atten- 

 uated at both ends, flexuous, poriform at margin, adhering 

 to soil by root-like fibres. — Sow. t. 424. 



On the ground. 



t Of uncertain affinity. 



8. D. ferruginea, Schiim. ; imbricato-connate ; pileus 

 light-yellow-ferruginous, white-villous when young and at 

 margin ; internally flesh-colour, coriaceous, efl'uso-reflexed, 

 zored; hymenium porous, narrowly labyrinthiform, wavy. 

 — Fl. Dan. t. 2029. 



On dead wood. Strachan, Kincardineshire. 



Genus 27. HEXAGONIA. Poll. PI. nov. (p. 35). 



Hymenophore descending and foi-ming a trama of same colour 

 and similar with pileus ; pores from the first dilated into 

 hexagonal, regular, woody-hard alveoli, the dividing walls 

 firm, never torn ; dimidiate ; sessile ; growing on wood ; 

 corky-woody ; persistent ; not forming strata. 



No British examples recorded. 



