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twigs brown and dead (Fig. 95). If more closely examined, 

 the twigs will be found to bear patches of coal-black, 



Fig. 05.—Gibbera 

 Cowberry. The perithecia form 

 black patches on the living leafy 

 branch, as well as the dead brown 

 one. (v. Tubeuf del.) 



Fig. 07.—6ibbera vaccinii. Cross-section of Cowberry showing 

 a patch of perithecia in section ; the hairy perithecia contain 

 paraphvses and asci with spores ; a niyccliiun penn&ites the 

 cortical tissue of the host. Short hooked hairs cover the 

 epidermis of the stem. (v. Tubeuf del.) 



spherical perithecia, which are coated by short, acute, unicellular, 

 black hairs (Fig. 97). The perithecia contain paraphvses and 



