128 FUNGUS-FLORA. 



hymenmin when perfectly developed,' pajler, glaucous, and 

 ■waxy ; spores subglotose, 4-5 /i. diameter. 



Corticium, atro-mrens. Fries, Hym. Eur., p. 651 ; Mass., 

 Mon. Thel., p. 156 ; Stev., Fung., p 277. 



On rotten wood, leaves, sticks, &c. 



*** Developing on twigs lelow the harh, wMch is pushed off. 



Corticium comedens. Fr. 



Effused, innate, inseparable from the matrix, exposed hy 

 the rupture of the bark, dingy lilac, then becoming pale ; 

 hymenium even, glabrous, cracked when dry ; spores cylin- 

 dric-ellipsoid, at length, curved, 14-16 x 6- 7 fn. 



Gortidum comedens. Fries, Hym. Eur., p, 656 ; Mass., Mon. 

 Thel., p. 155. 



On branches, especially hazel. Originates below the bark, 

 which eventually becomes torn and reflexed, exposing the 

 hymenium, which is at first purplish, becoming almost white ; 

 slightly viscid when moist. 



Corticium nigrescens. Fries. 



Effused, interrupted, exposed by the rupture of the bark, 

 closely adnate, thin, yellowish, then becoming blackish; 

 hymenium sometimes papillose, waxy, slightly pruinose ; 

 spores oyHndric-oblong, obtuse at both ends, curved 18-20 X 

 5-6 /t. 



Corticium nigrescens. Fries, Bpicr., p. 565 ; Mass., Mon. 

 Thel., p. 155, 



On branches. Originating beneath the bark, resembling 

 G. comedens in habit, but distinguished by being pale at first, 

 and then becoming blackish, whereas the last named is purple 

 when growing and becoming whitish with age. Effused, 

 very thin, closely adglutinated, indeterminate ; hymenium 

 waxy, powdered with the very large colourless spores. 



STEREUM. Pers. (emended), (figs. 11-14, p. 97.) 



Furnished with a distinct central stem, horizontal and 

 attached by a broad base, or entirely resupinate ; hymenium 

 smooth, even, inferior in the stipitate or reflexed forms, 

 superior in resupinate species, originating from a compact. 



