234 FUNGUS-FLORA. 



expands, but more rapidly in the direction of the light, and 

 the hymenium is formed beneath the small scales of the 

 upper part of the stem, consisting when feebly developed of 

 large angular pores, becoming mere reticulations towards 

 the base. Pileus when fully expanded pallid-ochraceous 

 with scattered brown adpressed scales. If a portion of the 

 hymenium be torn off, a new stratum of pores is rapidly 

 developed. In vaults and hollow trees it sometimes assumes 

 the form of a Clavaria, but in this case seldom produces a 

 pileus. (Berk.) 



Polyporus Michelii. Fr. 



Pileus 24 in. across, thin, depressed, repand, pliant, 

 minutely silky and somewhat squamulose, white with a 

 yellowish tinge; stem 1-2 in. long, more or less lateral, 

 usually thickened at the base, rough, white, brownish at the 

 base ; pores very short, circular or slightly elongated 

 radiately, entire, large, white; spores almost colourless, 

 elongato-elliptical, 16-17 x 7 p.. 



Polyporus Michelii, Tries, Syst. Myc. i. p. 343 ; Stev., Brit. 

 Fung., p. 190. 



On trunks, stumps, &c., often on willow. Allied to 

 Polyporus squamosus, but distinguished by the pores being 

 minute at first, then becoming large, but remaining entire 

 and regular, and by the larger spores. 



Polyporus melanopus. Fr. 



Pileus 2-3 in. across, pliant, almost plane, then depressed 

 in the centre and more or less infundibuliform, at first 

 minutely flocculose, becoming smooth, whitish then yellowish- 

 brown or tan-colour, flesh thin, white, soft, tubes very short, 

 decurrent, unequal, minute, white ; stem excentric, 11 ^ in. 

 long, 34 lines thick, slightly attenuated upwards and 

 diffused into the pileus, often curved, minutely velvety, 

 black ; spores almost or quite colourless, 5 X 2 5 p.. 



Polyporus melanopus, Fries, Syst. Myc. i. p. 347 ; Stev., 

 Brit. Fung., p. 190. 



On roots, and apparently on the ground, but attached to 

 wood, chips, &c. Amongst the allied, more or less black- 

 stemmed British species of Polyporus, the present is distin- 

 guished from P. squamosus and P. Michelii by the very 

 minute pores that average 45 -in the space of 1 mm. From 





