POLYSTICTTJS 609 



2043. P. versicolor (Linn.) Fr. Hussey, lUus. Brit. Myc, i, t. 24. 



Versicolor, of various colours. 



P. 2-8 cm., variously coloured, dimidiate, orbicular, often imbricate, 

 depressed behind, becoming plane, velvety, or pubescent, marked with 

 concentric, smooth, shining, satiny zones of various colours. Tubes white, 

 very short; orifice of pores whitish, becoming yellowish, small, round, 

 becoming torn and irregular. Flesh whitish, thin, coriaceous. Spores 

 white, oblong, 6-9 x 3/A. Trunks, stumps, twigs, pales, and branches. 

 Jan. Dec. Common, (v.v.) 



var. fuscatus Fr. Fuscatus, dusky. 



Differs from the type in the fuscous, zoneless or obscurely zoned p. 

 and the torn yellow pores. Twigs, and fallen branches. Jan. Dec. Not 

 uncommon, (v.v.) 



var. nigricans Lasch. Nigricans, becoming black. 



Differs from the type in the greyish black p. with black zones, and the 

 smoke grey pores. Stumps, and branches. Jan. Dec. Not uncommon. 

 (v.v.) 



2044. P. stereoides Fr. (= Trametes mollis (Sommerf.) Fr. sec. Bres.) 

 Fr. Icon. t. 187, fig. 3, as Polyporus stereoides Fr. 



Stereum, the genus Stereum; etSo?, like. 



P. 2-3 cm., greyish fuscous, becoming black, effuso-reflexed, reni- 

 f orm, imbricate, pubescent, then glabrous, with concolorous, depressed, 

 narrow zones, scarcely 1 mm. thick. Tubes white, short; orifice of pores 

 white, medium sized, obtuse, deformed, and daedalioid. Flesh yellowish, 

 thin, rigid, coriaceous. Spores white, "elliptical, 9/u," Quel., "oblong, 

 9-12 x 3-5-4 /A" Romell. Trunks, and stumps of Abies and deciduous 

 trees. Aug. Oct. Rare. 



2045. P. fibula Fr. Sow. Eng. Fung. t. 387, fig. 8. Fibula, a buckle. 

 P. 1-3 cm., whitish, or greyish, becoming yellowish, reniform, or 



orbicular, adnate behind, or affixed by the centre, velvety hairy, often 

 radiato-rugose ; margin entire, acute. Tubes white, very short; orifice 

 of pores whitish, becoming yellowish, small, round, absent at the 

 margin. Flesh whitish, soft, tough, coriaceous. Spores "ovate, in- 

 ternally granular, externally punctato-roughened, hyaline, 810 x 

 5-6 \L or 7-9 x 2-3 /A, cylindrical, curved, rarely straight" Bres. Elm 

 stumps, oak branches, and worked wood. Oct. Jan. Uncommon, (v.v.) 



2046. P. gossypinus (Lev.) Massee. (= Daedalea gossypina (Lev.) 

 Quel.) Gossypium, the cotton plant. 



P. 3-10 cm., white, effuso-reflexed, becoming plane, tomentose. Tubes 

 white, 2-4 mm. long; orifice of pores greyish, labyrinthiform, then 

 angular, rather large, denticulate. Flesh white, thin, coriaceous. Spores 



39 



