SCLEROTINIA 



261 



vine directly. Istvanffi has written a very detailed account, 

 profusely illustrated, of the vine sclerotinia. 



FIG. 77. Sclerotinia fuckeliana. i, vine leaf with Botrytis form of 

 fungus ; 2, conidiophores of Botrytis ; 3, a head or cluster of conidia ; 

 4, sclerotia bearing Botrytis form of fruit ; 5, a sclerotium bearing two 

 ascophores ; 6, like fig. 5, on a larger scale ; 7, a shrivelled grape 

 -with sclerotia ; 8, ascus with spores. All except Fig. i mag. 



Ascophores yellowish-brown, 0-5-4 mm. across, stem 

 slender, 2-3 springing from a small black sclerotium ; spores 

 lo-n X6-7 /A. 



