THE CALIFORNICA GRAPES 



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. Leaves only flocculent or cobwebby or glaucous below when 

 fully grown (i. e., not covered with a thick, dense, felt-like 

 tomentum, except sometimes in V. Doaniana). 



Fig. 19. Vitis Californica growing on a stub over 50 feet high. Yallo Ballo 

 Mountains, Cal. W. L. Jepson, 1897. 



c. White-tipped grapes, comprising species with the ends of 

 the growing shoots and the under surfaces of the leaves 

 whitish or gray. 



Vitis Girdiana, Munson. (Valley Grape.) Strong climbing vine, 

 with thick diaphragms : leaves medium to large and rather 

 thin, broadly cordate -ovate, with a rather deep and narrow 

 sinus and nearly continuous or obscurely 3-lobed outline 

 (sometimes markedly 3-lobed on young shoots), the teeth 

 many and small and acute, the apex short-triangular or 

 almost none, the under surface remaining closely ashy- 

 tomeutose : clusters large and very compound, each one 

 dividing into three or four nearly equal sections, which are 

 in turn shouldered and thyrse-like: berries small, black, and 



