Rev. M. J. Berkeley on Exotic Fungi, 389 



hard. Pileus thin, sometimes papillose, brown-blood-eoloured, 

 at length pale, effused at the base ; pores extremely minute, 

 pale, with a brownish tinge. Very like P. igniarius. Pileus 

 effuso-reflexed, rather thin, zoneless, tuberculated, smooth, 

 margin subacute, brown-blood-coloured, 3 — 4 inches broad. 

 Mauritius, Mr. Telfair. Of this I have seen no specimens. 



27. P. {Apus. Perenn.) marginatus, Fr. On birch. North 

 America. Dr. Richardson. 



28. P. [Apus, Perenn,) fraxineus, Fr. On ash. North Ame- 

 rica. Dr. Richardson. 



29. P. [Apus, Perenn,) hydnoides, Fr. Pol. ur sinus, P.vuU 

 pinus, Link in Berl. Mag. 



Mauritius, Mr. Telfair. St. Vincent^s, Rev. L. Guilding, 

 Demerara, Mr. Parker. The hymenium of this species varies 

 very much. The pores are sometimes close and angular with 

 thin dissepiments ; sometimes they are perfectly round and 

 distant as represented by Bosc under Bol, hydnatinus, with 

 the dissepiments thicker in consequence of the cellular sub- 

 stance of the fungus beginning to grow again after the perfec- 

 tion of the hymenium, and thus partially obliterating the 

 pores. There is a triquetrous variety from Brazil. 



30. P. [Apus, Perenn.) fibrosus, Hook, in Kunth. Syn. vol. i. 

 p. 10. sub Boleto, Subreniform, somewhat lobed, undulated. 

 Pileus brown shaded with reddish-grey, zoned, clothed with 

 scattered branched concentrically disposed fibres, sericeous 

 beneath ; margin very thin, acute, fimbriated ; pores minute, 

 subangular, umber; dissepiments very thin. Pileus 1|. of an 

 inch long, 3|^ broad, flattened, thin ; substance much softer 

 than in the last, which is hard and woody, ferruginous-umber. 

 Pores not stratose. Certainly distinct from the foregoing. 

 This is placed next to P. hydnoides on account of its close 

 affinity, but I doubt whether either is truly perennial. With 

 P. tenuis, Humboldt. Demerara, Mr. Parker. 



31. P. [Apus, Bienn.) gilvus, Fr. Suberoso-coriaceous. 

 Pileus reniform, obscurely zoned, rugoso- striate, subsericeous, 

 red grey ; substance rhubarb- coloured ; pores small, subfer- 

 ruginous. 



Var. scabro-rugosus, Berk. Imbricated ; pileus dimidiate, 

 more or less zoned, radiato-rugose and coarsely scabrous, red- 



