164 



AGARICINI. 



Lenzites. times simple, sometimes branched and often anastomosing, about 

 6 mm. (3 lin.) broad, dingy white, edge acute. 



Dimidiate, sessile, 

 caespitoso-imbricated. 

 same colour. 



It varies solitary and 

 The margin is of the 



Stumps, logs, &c., chiefly birch. 

 Common in England. Rare in Scot- 

 land. Perennial. 



Deeply grooved concentrically. Often 

 green with minute Algce. Often quite re- 

 supinate, and then very deceptive. M.J.B. 

 Name — betula, birch. Fr. Monogr. ii. p. 

 246. Hym. Eur. p. 493. Berk. Out. p. 228. 

 /. 15./ 3. C. Hbk. n. 696. S. Mycol. Scot. 

 n. 660. Ag. Linn. — Fl. Dan. t. 1555. B. 

 with darker gills. Sow. t. 182. Schcrff. t. 57 

 is a handsome form. 



LI X. Lenzites betulina 

 natural size 



One-fourth 



2. L. flaccida Fr. — Pileus at first 

 whitish, then dingy, with zones whol- 

 ly of the same colour, coriaceous, 

 thin, scarcely 2 mm. (1 lin.) thick, unequal, easily bent, strigoso- 

 hairy. Gills thick, firm, straight, very broad, crowded, simple or 

 branched, with shorter ones intermixed, at first shining white, then 

 becoming pale. 



The gills are never anastomosing, but here and there obfurcate, i.e., towards 

 the base. Commonly taken for L. betulina, but wholly different. 



On stumps. Frequent in England. 



~Sa.me—Jlaccidus, flaccid. Fr. Monogr. p. 246. Hym. Eur. p. 493. Berk. 

 Out. p. 228. C. Hbk. n. 697. Ag. Bull. t. 394. Bolt. t. 158. 



** On wood of trees with leaves like needles. 



3. L. ssepiaria Fr. — Pileus 2.5-7.5 cent. (1-3 in.) broad, yellow- 

 tawny when young (remaining so at the margin when full grown), 

 date brown when full grown, becoming black when old, corky- 

 coriaceous, hard, convex becoming plane, sometimes orbicular, 

 more frequently extended longitudinally, zoned, strigoso-tomen- 

 tose, at length squamulose and pitted ; flesh tawny. Gills extended 

 to the base, very rigid and firm, branched, more or less anasto- 

 mosing, 2-4 mm. (1-2 lin.) broad, yellowish when in vigour, but 

 umber when old, the edge entire or slightly toothed. 



Dimidiate, lateral. The gills are like those of Dcsdalea. It varies resupi- 

 nate, forming orbicular placenta-like patches. There are many remarkable 

 monstrous forms ; occasionally the hymenium is wholly that of Polyporus. 



On pine. Uncommon. Jan. -Dec. 



