GRAPE FLECK 171 



this variety for a whitish form of the fungus found on the 

 leaves and fruit-stalks of vines growing at Trieste, Austria. 



Var. tuberculatum, M'Alpine. — This variety appears 

 mainly to depend on the presence of a more or less 

 evident stroma, which, however, may sometimes be absent. 

 The differences observable in spore or other measurements 

 are of no value, specific or varietal, when the same are 

 admittedly so variable as in the present species. The 

 fungus appears to be widely diffused in Victoria. This 

 fungus was considered as the type of a new genus — 

 Aureobasidium — by Viala, who was only acquainted with 

 the autumn form produced on the fruit of the vine. 

 Prillieux has shown that it also occurs on the leaves of 

 the vine under the white form in spring, and correctly 

 states that it conforms in all important points with the 

 genus Exobasidium. Further, the amount of variation 

 presented by the typical form overlaps those peculiarities 

 considered as characterising the two varieties enumerated 

 above. 



Neither of the authors quoted has suggested remedial 

 measures. 



Viala and Boyer, Une Maladie des Raisins produite par 

 I' Aureobasidium viiis, i pi. 



Prillieux, Malad. des Plantes Agricoles, vol. i. p. 298, 



fig. 



M'Alpine, Additions to the Fungi on the Vine in Australia, 

 p. 16, figs. 



Hypochnus cucumeris, Frank. — This spreads as a delicate 

 grey film over the stems of cucumbers close to the ground, 



