POLYPORUS 581 



brownish, much branched, and divided up into numerous spathulate lobes, 

 undulate, sinuous, often conchate. St. 2-3 x 1-5-4 cm., white, gradu- 

 ally spreading and dividing into the lobes of the p. Tubes white, decur- 

 rent, -5 mm. long; orifice of pores white, becoming fuscous, minute, 

 round. Flesh white, often becoming reddish, soft, elastic. Spores white, 

 elliptical, 6-7 x 3ju. Smell often like that of mice. Edible but rather 

 tough. Forming large tufts on beech, oak trees and on stumps. Sept 

 Dec. Not uncommon, (v.v.) 



1921. P. cristatus (Pers.) Fr. Krombh. t. 48, figs. 15 and 16. 



Cristatus, crested. 



P. 5-10 cm., rufous greenish, or greenish yellow, entire, or dimidiate, 

 or spathulate, scalloped, or lobed, depressed, subpulverulently villose, 

 then rimosely squamulose. St. 2-5-6 x 1-2 cm., white, or lemon yellow, 

 becoming discoloured, irregularly shaped, connate, rarely simple, 

 glabrous. Tubes whitish, decurrent, 12 mm. long; orifice of pores 

 whitish, becoming discoloured, minute, angular, toothed. Flesh white, 

 becoming discoloured, soft, fragile. Spores white, subglobose, 5-6 x 5/x, 

 with a large central gutta. Beech woods. Sept. Oct. Eare. (v.v.) 



B. P. at first soft and succulent, then dry and fragile, arising from 



a tubercle, or caespitose. Pores yellow, or flesh colour. 



*Flesh white, or yellowish. 



1922. P. sulphurous (Bull.) Fr. Grev. Scot. Crypt. Fl. t. 113. 



Sulphureus, like sulphur. 



P. 10-40 cm., reddish yellow, or orange, becoming paler with age, 

 imbricated, undulated, pruinose, sessile, rarely stalked. Tubes sulphur 

 yellow, becoming paler, -5 mm. long; orifice of pores bright sulphur 

 yellow, becoming pale, minute, round. Flesh light yellowish, then white, 

 soft, cheesy, often exuding a sulphur yellow milk when broken and 

 quite fresh. Spores white, elliptical, 7-8 x 5ju,, minutely papillose. 

 Taste acid. Said to be edible. On stumps, and trunks of willows, 

 oaks, alders, walnuts, poplars, apples, ashes, yews, pines, etc. May 

 Nov. Common, (v.v.) 



var. ramosus (Bull.) Quel. Ramosus, branching. 



Differs from the type in dividing up into several digitate-like, cylin- 

 drical branches covered with the pores. On oaks, and willows. Aug. 

 Sept. Not uncommon, (v.v.) 



var. albolabyrinthiporus Rea. 



Albus, white; \aftv pivOos, intricate; tropo^, a pore. 

 Differs from the type in the white, labyrinthiform, torn pores, and 

 in the flesh being white from the first. On an oak. Nov. Uncommon. 

 (v.v.) 



