388 Rev. M. J. Berkeley on Exotic Fungu 



lowed out. Pileus 1| inch across, 1^ high, dirty white, banded 

 with brown ; bands scarcely at all depressed, quite smooth, 

 nearly even. Margin rather obtuse. Pores small, perfectly 

 round, fawn-coloured, cinnamon within. Old specimens have 

 four or five smooth, even, convex, black-brown ridges. Sub- 

 stance cinnamon coloured. 



On birch. Isle a la Crosse. Dr. Richardson. 



21. P. {Apus, Perenn.) nigricans, Fr. Ondeadbu-ch. Isle 

 a la Crosse, Jan. 1827. Dr. Richardson. 



22. P. {Apus. Perenn.) igrdariusy Fr. On birch. North 

 America. Dr. Richardson. 



A resupinate state of this species with a very narrow dark 

 border was found April 1830, by Bertero in Juan Fernandez, 

 marked No. 1682. 



23. P. [Apus. Perenn.) pectinatus, Kl. 1. c. p. 485. Small. 

 Pileus triquetrous, imbricated, bay, crested with concentric 

 thin velvety folds ; pores short, minute, yellow. Pol. indicus, 

 Kl. MSS. in Hook. Herb. Pileus effused at the base, scarce 

 one inch broad. Substance of the colour of turmeric. The 

 folds arise from the successive reflexed borders of the pileus, 

 calling to mind Cytherea Dione. 



East Indies. Dr. Wight. Nearly allied to the last. 



24. P. {Apus. Perenn.) spadiceus, Berk. Hard, coriaceo- 

 suberose. Pileus thin, bright brown, minutely velvety, closely 

 zoned. Hymenium ferruginous-cinnamon ; pores very mi- 

 nute, subrotund, cinnamon within. Pileus \\ inch long, 2 J 

 inches broad. Substance rhubarb-coloured. A very neat spe- 

 cies, resembling P. tabacinus. Allied to the last. 



East Indies. Dr. Wight. 



25. P. [Apus. Perenn.) rhabarbarinus, Berk. Horizontal, 

 heavy, hard. Pileus flattened, broad, rugose, deeply and re- 

 peatedly zoned, black-brown, almost lacquered. Hymenium 

 cinnamon-brown. Pores round, extremely minute, almost in- 

 visible to the naked eye. Substance rhubarb-coloured. Pileus 

 5 inches long, 8 inches broad, f of an inch thick. There is a 

 rudiment of a lateral stem. The species is clearly related to 

 P. igniarius. This fine species has unfortunately no label at- 

 tached to it. It is probably from Brazil. 



26. P. {Apus. Perenn.) sanguinarius, Kl. 1. c. p. 484. Corky, 



