Rev. M. J. Berkeley on Exotic Fungi. 387 



ning, densely imbricated, lobed, thin, 2 — 3 inches broad, 1 

 inch long, white or wood-coloured ; dissepiments extremely 

 thin. Pores sometimes strongly toothed. Margin sometimes 

 very thin, torn, and inflexed when dry. 



Trunks of trees. Mauritius. Mr. Telfair. 



17. -P. [Merisma] cristula, Kl. in Hook. Herb. Dull ver- 

 milion, imbricated, confluent, coriaceous. Pilei zoned towards 

 the margin, irregular, smooth. Pores shallow, minute, irre- 

 gular, angular, dissepiments thin, torn. Pilei confluent, -| — 1 

 inch broad, their disk crested with numerous smaller pilei, 

 many of which are cylindrical and abortive; margin thin, acute, 

 barren. Pores of the smaller pilei decomposed into hydnoid 

 bristles, so that some parts of the mass appear bristly. Sub- 

 stance firm with a slight ferruginous tinge. 



On decaying Bamboo. Dr. Wight. Allied to Pol. cinna- 

 barinus, which does not appear to occur in the tropics. The 

 colour however is much duller. 



18. P. (Apus. Per enn.) ligneus, Berk. Wood-coloured. Pi- 

 leus convex, ungulate, hard, ponderous, rugose, zoned ; hyme- 

 nium narrower with age ; pores extremely minute, round. Pi- 

 leus 3-| inches long, 5\ inches broad, 2^ inches thick. Sub- 

 stance wood-coloured, very hard, but velvety like cork. Mar- 

 ginal zones very narrow ; those in the centre about three, 

 much raised, brown. Hymenium becoming narrower every 

 year. Sometimes cylindrical from the elongation of the vertex. 



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



19. P. (Apus. Perenn) australis, Fr. P. foment arius, ft.ap- 

 planatus, Kl. in Hook. Herb. 



Mauritius. Mr. Telfair. A very extraordinary fungus oc- 

 curs in Mauritius which I think is clearly referable to this 

 species. It is furnished with a long lateral stem. Pileus much 

 longer than broad. Hymenium narrow with a broad sulcate 

 sterile border. Pores pale. Some specimens are altogether 

 stipitiform, pointed with an oblique abortive hymenium. I 

 have gathered Polyporus fomentarius more than once with a 

 long, distinct, lateral stem.. Plate VIII. 



20. P. [Apus. Perenn,) fomentarius, Fr. North America. 

 Dr. Richardson. 



Var. excavatus, Berk. Hard, ungulate. Hymenium hol= 



