Plate 27 



X15 



v^ c:- cr^ ^^ ''-:^ c^ ct:^ CD c::> c^ ei) cii 





o<o 





0'«- 



X600 



XIOOO 



OPEGRAPHA ATRA Pers. 



a. Plant on bark. 6. Portion of thallus and apothecia. c. Vertical section 



of thallus. d. Vertical section of apothecia. e. Ascus and paraphysis. 



/. Spore. 



