Stereum THELEPHORACE^E 405 



1807. S. oehroleueum Fr. (from the yellowish-white pileus ; Gr. 



ochros, pale yellow, leukos, white) a c. Coriaceous-mem- 

 branous. 

 P. reflexed, expanded, flaccid, silky, zoned, hoary-yellowish, 

 shaded pale brownish. Hym. even, smooth, cracking, yellowish 

 or greyish. 

 Wood, fir, maple, oak, hornbeam. Jan. 2 \ in. 



1808. S. purpureum Pers. (from the purple hymenium ; purpureus, 



purple) a b c. Coriaceous-soft. 

 P. effuso-reflexed, subimbricate, zoned, villoso-tomentose, pale 

 yellowish. Hym. even, smooth, bright rose- or dark-purple, 

 clouded, salmon. Flesh sometimes 1 in. thick, bright rose- 

 purple, 5-7 zoned. 



Dead wood, horse-chestnut, sycamore, hornbeam, fir, poplar, willow, birch, 

 elm, twigs, grass. May-Dec. 3J in. Said by Prof. J. Percival to be 

 the cause of "silver-leaf" disease in plum, peach, apricot and sloe. 

 Var. atro marginatum W. G. Sm. A beautiful and apparently distinct 

 plant, illustrated with drawings by Purton and Sowerby, in the British 

 Museum collection ; it has been named Auricularia elegans Sow. t. 412, f. I. 

 Berkeley regarded the drawings as a variety of Stereum pu7-pu?-eum Pers. 

 P. woolly or frosted, white, with a narrow black zone near the white 

 margin. On a moss-covered tree. 



1809. S. sanguinolentum Fr. (from the habit of the hymenium, 



bleeding when bruised ; sanguis, blood) a b. Coriaceous-thin. 



P. effuso-reflexed, substriate, adpressedly silky, pale brownish- 

 yellow ; marg. acute, white. Hym. even, smooth, pruinose 

 when old, brown-whitish or ashy, rarely as P. 



Wood, branches, twigs, pine ; common. Jan. -Dec. 3J in. 



1810. S. eonehatum Fr. (from the shell-like shape ; concha, a shell) a. 



Coriaceous-thin. 

 P. conchato-reflexed, subcrisped, rugose, glabrous, obscurely 



zoned, dull yellowish or brown-buff-whitish. Hym. even, 



smooth, dry, brown. 

 Subimbricate. Fir. \\ in. 



1811. S. spadieeum Fr. (from the date-brown hymenium ; spadix y 



date-brown) a b. Coriaceous. 



P. effuso-reflexed, hispid-zoned, very hispid at base, pale yellowish 

 or orange-brownish. Hym. even, smooth, brown-vinous over 

 pale yellow, not dark, or claret-brown, exuding red juice when 

 bruised. 



Stumps and branches, ash, oak ; common. Jan. -Dec. 4! in. 



1812. S. rugosum Pers. (from the commonly wrinkled hymenium ; 



ruga, a wrinkle) a b c. Coriaceous-rigid. 



P. effuso-reflexed, shortly reflexed, obtusely marginate, pruinose, 



then smooth, buff, paler behind, zoned sienna. Hym. pruinose, 



yellowish-brown or cream-buff, shaded pale livid, becoming 



pale vinous where bruised. 



Stumps, fir, hornbeam, oak, hazel ; very common. Jan. -Dec. 6 \ in. 

 Var. Lauro-cerasi Stev. grows on cherry laurel, Primus Lauro-cerasus. 



