144 FUNGI. [Polt/porus, 



On old oaks : not common. Ragley Park. Himley Park near 

 Dudley. Purtpn. Morehay Lawn in Rockingham Forest, Norths. 

 Mev. M. J. Berheley. — Pileus 7 inches or more broad, 2\ thick, obtuse, 

 pulvinate, grossly tuberculated, minutely pitted towards the edge and 

 when fresh distilling drops of moisture, which is sometimes glutinous, 

 according to Purton. When young it is described by Fries as cinnamon, 

 when old it is cinereous or whitish as if overrun with some Thelephora, 

 and the white surface when bruised changes to red-brown. 3Iass of 

 pores nearly plane; pores minute, red-brown within, their orifices 

 whitish or subcinereous. Substance sxW'^ , /S/we// .'Strong, subacid. The 

 margin was evidently gnawed by Rabbits, causing the appearance of a 

 honeycomb divided vertically, which was probably the case also in Mr. 

 Purton*s specimens. Duration probably not more than two years. 



33. P.fomenidriiis, L. (^real Amadou) ; pileus subtriangular 

 smooth brownish-grey soft within, margin pale, glaucous-whitish 

 or yellowish as well as the very minute pores, at length ferru- 

 ginous. iPr. St/st. Myc. v. \.p. 374. Greo.^ Fl. Ed. p. 400. — 

 Bol. fomentarius, Linn. Suec. 1252. Sow! t. 133. With. v. 

 4. p. 292. Pers. Syn. p. 536. Purt. Midi. Fl. t;. 2 <^ 3. n, 

 1008.—^. ungidatus, Bull. t. 49 J./ 2.— b. flat, thin. B. Lip- 

 sieiisis, Batsc/i, Co7it. \.f. 130. — B. applanatus, Pers. Obs. Myc, 

 2. p. 2. — B. fomentarius^ (3. applanatus, Pers. Syn. p. 536. 



i)n oak, birch, &c. More or less diffused over the whole of Great 

 Britain, but seldom abundant anywhere, b. Hamilton. Br. Davidson. 

 — Pileus 4 — 5 inches broad, subtriangular, obsoletely zoned, nodulose, 

 brownish-grey, resembling coffee slightly tinged with milk ; sometimes 

 in age, especially when growing on birch, nearly white, occasionally 

 tinged with bright-yellow ; margin in general subacute, but sometimes 

 very obtuse, the substance reddish-brown, always much softer than in 

 the following species, but varying in density. Pores very minute, strati- 

 fied, whitish, glaucous, or yellowish-grey, at length ferruginous, the mass 

 of them in general concave. The best species for making Amadou, and 

 very widely distributed over the globe. 1 have before me specimens of 

 the plane variety from St. Vincents and Mauritius, and of the more 

 common state from Madeira. Thunberg appears to have met with it 

 in Japan. The plane variety differs only in being much thinner and in 

 the zones being narrower and more frequent. 



34. P. nigricans, Fr. (black Atnadou Polyporus') ; very hard, 

 pileus thick black pulvinate grooved concentrically, the margin 

 and minute pores ferruginous. Fr. Syst. Myc. v. \.p. 375. 



Trunks of Birch trees, Inverary. Klotzsch in Hook. Herb. — A very 

 distinct species ; not at all fit for making tinder. The specimen before 

 me exactly resembles the figure marked A., Bull. t. 401, except that 

 it is of a bright shining black. The mass of tubes in this is quite plane. 

 But in specimens collected at I.^le a la Crosse, N. America, by Dr. 

 Richardson, and" publislied as belonging to this species in a paper on 

 exotic Fungi in the Linnaa, by M. Klotzsch, the pileus is much 

 cracked and not at all shining, and either black or in parts of a pale oj)aque 

 cinereous hue, as represented by BuUiard in the plate above cited, and 

 the tubes form a convex mass and are of a much redder brown. 



35. P, ignidriuSf L. {hard Amadou Polyporus) ; hard, pileas 



