POLYPOEUS. 231 



pores average about f mm. in length near the stem, becoming 

 smaller and angularly round near the margin. 



Polyporus leptocephalus. Fr. 



Pileus about 1 in. across, tough, then coriaceous, thin, con- 

 vexo-plane, glabrous, even, zoneless, pale then fawn-colour, 

 margin rather wavy, flesh white ; pores adnate, subrotund, 

 minute, whitish ; stem about 1 in. long, glabrous, pallid. 



Polyporus leptocephalus, Fr., Syst. Myc. i. p. 349; Berk., 

 Outl., p. 237. 



On trunks. Appears to be close to P. fuscidulus, perhaps 

 distinct in the smaller pores, but I have not seen an au- 

 thentic specimen, hence cannot give spore measurements, 

 &c. All the specimens that I have seen under this name 

 belong to P. fuscidulus. 



Pileus 1 in. broad, tawny-bay, flat, thin, leather-like; 

 pores white, very short ; stem pale or reddish-brown, thick 

 as a crow-quill, and about ^ in. high. (Withering.) 



Polyporus Schweinitzii. Fr. 



Pileus 6-9 in. across, tomentose, rugged, and matted into 

 little heaps, dark brown with a ferruginous tinge, flesh 

 thick, spongy and soft, fibrous, bright brown ; stem thick, 

 very short, bright brown, sometimes almost obsolete ; tubes 

 about ^ in. long, openings large, irregular and variable in 

 form, yellow with a tinge of green; spores elliptical, ob- 

 liquely apiculate, pale yellow, 7-8 x 4 p.. 



Polyporus Schweinitzii, Fries, Syst. Myc. i. p. 351 ; Fries, 

 Icones, pi. 179, fig. 3 ; Stev., Brit. Fung., p. 189. 



In pine woods, &c., about roots and stumps. 



Distinguished from such species as P. hispidus, spongia, &c., 

 by the central stem, which is, however, sometimes almost ob- 

 solete ; it is never attached by a broad, lateral base. 



Openings of tubes often elongated and sinuous, l^y mm. 



Very large, 8 in. and more broad, sometimes regular and 

 almost plane, slightly depressed, sometimes irregular in form 

 and dimidiate, the pilei growing into each other and incrust- 

 ing, at first with a foxy tomentum, which colour is soon con- 

 fined to the margin, when old entirely dull brown ; flesh 

 when the plant is growing very soft and spongy, then har- 

 dened, fragile when dry, rhubarb-colour becoming brownish. 

 (Fries.) 



