PENIOPHORA. Ill 



with brown or lilac. In old specimens the cystidia fall away, 

 leaving the hymenium smooth. 



B. Margin addressed, often indeterminate. 



Peniophora limitata. Cooke. 



Subrotund, closely adnate, firm and rather thick, margin 

 black ; hymenium dirty ochraceous, becoming pale, minutely 

 velvety; cystidia fusoid, 30-40 X 15-20/x; spores elliptic- 

 oblong, with a minute apiculus at the base, slightly curved, 

 20-22 X 6 fji. 



Peniophora limitata, Cke., Grev. viii. p. 21, pi. 123, f. 7 ; 

 Mass., Mon. Thel., p. 145. 



Corticium limitatum, Stev., Brit. Fung. ii. 280. 



On bark and wood. Well marked by the dingy, pale 

 hymenium being circumscribed by a well-defined black 

 margin. 



Peniophora rosea. Mass. 



Broadly effused, thin, closely adnate, margin fimbriate, 

 whitish ; hymenium rosy, becoming pale, minutely velvety, 

 often cracked when dry ; cystidia fusoid, 40-60 X 18-25 /x, ; 

 spores elliptic-oblong, curved, 13-15 x 4-5 //,. 



Peniophora rosea, Mass., Mon. Thel., p. 146. 



Corticium roseum, Berk., Outl., p. 273; Cke., Hdbk., n. 

 926 ; Stev., Brit. Fung. ii. 275. 



On wood and bark. Sometimes in small scattered patches, 

 but usually broadly effused, clear rose-pink with a white 

 byssoid margin when fresh, when dry pale ochraceous with 

 traces of pink only. 



Peniophora incarnata. Mass. 



Inseparable, rather waxy when fresh, margin byssoid, or 

 altogether indeterminate ; hymenium reddish or orange, not 

 becoming pale, minutely velvety ; cystidia fusoid, 25-30 X 

 12-18 fji ; spores elliptic-oblong, curved, 18-20 x 5-6 /x, 



Peniophora incarnata, Mass., Mon. Thel., p. 147. 



Corticium incarnatum, Cke., Hdbk., n. 938; Stev., Brit. 

 Fung. ii. 227. 



On wood and bark. Often broadly effused, closely adglu- 

 tinated, hymenium usually becoming dull orange with age, 

 but never becoming colourless, as in P. roseum. When old 



