124 FUNGUS-FLORA. 



Corticium jyorostim, B. and Br., Ann. Nat. Hist., ser. 4, xi. 

 p. 343 ; Mass., Mon. Thel., p. 138. 



On wood. Broadly and irregularly effused, generally 

 loosely fibrilloso and spongy, with variously-sized pores or 

 lacunae on the surface ; vaguely spreading on the surface of 

 wood and passing on to surrounding bodies on the ground, 

 sometimes forming a thick felt with scattered tufts of 

 sporophorcs, as in the imperfect forms of Cort. arachnoicleum ; 

 sometimes passing from the above stage into a compact, con- 

 tinuous, waxy hymenium of an ochraceous or pale cinnamon 

 colour when dry. The hyphae are 4-5 /x. thick, and fur- 

 nished with numerous clamp-connections; resembling in 

 habit Corticium porosum, differs in the spores and in the 

 hymenium not being cracked when dry. 



Corticium. radiosum. Fr. 



Subrotund, thin, closely adnate, margin white, fibrillose, 

 radiating ; hymenium dingy ochraceous, not cracked when 

 dry ; spores subglobose, 5-(3 /x. diameter. 



Corticium: radiosum, Fries, Hym. Eur., p. G49 ; Mass., Mon. 

 Thel., p. 139. 



Athelia ochracea, Pers., Myc. Eur., i. p. 84. 



Corticium radians, B. and Br. 



On rotten wood. Somewhat resembling C. lacteum in 

 habit, but distinguished by the dark ochraceous hymenium, 

 which does not crack when dry. 



** Hymenium hriyldhj coloured. 



Corticium roseolum. ]\Iass. 



Very broadly eirused, indeterminate, very thin and_ in- 

 separable from the matrix; hymenium continuous, bright 

 rose-coloured, becoming pale; spores subglobose, apiculate 

 7 X 8-0 /x. 



Corticium roseolum, Massee, in IMon. Thel., p. 140. 



On old worked wood. Spreading irregularly for many 

 inches on smooth wood, exceedingly thin, adglutinatcd, 

 margin vague ; hymenium not cracked when dry, at first of 

 a bright rose-colour, then becoming pale and i)ersisting as 

 pale ochraceous, with only a tinge of ro.so when dry. Spores 

 very abundant, resembling in habit Pcnioj^hora incarnaia 



