110 FUNGUS-FLORA. 



becoming more or less involute, under surface smooth, 

 blackish. ; hymenium reddish-lilac ; cystidia fusoid, 5070 X 

 15-20 p.; spores elliptic-oblong, slightly curved, 12-14 x 

 5 p.. 



PeniopJiora quercina, Cooke, Grev., viii. p. 20, pi. 125, 

 f. 13 ; Mass., Mon. Thel., p. 141. 



Corticium quercinum, Fr., Epicr. 563 ; Cke., Hdbk., n. 936 ; 

 Stev., Brit. Fung. ii. 278; Grev., Scot. Or. Fl., t. 142; Berk., 

 OutL, p. 275. 



On branches, especially oak. Variable in size, sometimes 

 ^ | in. across with the margin upturned and attached by a 

 central point, at others extending for several inches, ap- 

 planate with the extreme edge only free. Hymenium varying 

 from flesh-colour to lilac, when old often slate-colour. 



Peniophora pezizoides. Mass. 



Erumpent ; subcoriaceous, at first cup-shaped, then ex- 

 panded, outside pale, villose ; hymenium ochraceous, minutely 

 velvety; cystidia fusoid, 50-60 x 15-20 /A; spores globose, 

 4-5 /*. 



Peniophora pezizoides, Mass., Mon. Thel., p. 141, pi. xlvii. 

 figs. 17-19. 



On branches of horse-chestnut. Bursting through the 

 bark, attached by a central point, at first with the margin 

 strongly involute, becoming expanded ; from ^ |- in. across. 

 Allied to Peniophora quercina, but distinguished by the small 

 globose spores and the pale villous exterior. 



Periophora gigantea. Mass. 



Very broadly effused, margin free, strigose ; substance 

 rather fleshy, when dry cartilaginous ; hymenium minutely 

 velvety, whitish, becoming tinged with brown when old ; 

 cystidia fusoid, 50-60 x 15-25/*; spores elliptical, 9-10 x 

 5-6 p.. 



PeniopTiora gigantea, Mass., Mon. Thel., p. 142. 



Corticium giganteum, Berk., Outl., p. 272 ; Cke., Hdbk., n. 

 922 ; Stev., Brit. Fung. 274. 



On fir bark and wood, leaves, &c. Often broadly effused, 

 forming patches a foot or more in extent, when young and 

 moist rather soft and fleshy, becoming thin and cartilaginous 

 when dry ; hymenium at first almost white, becoming tinged 



