Bui. 209, U. S. Dept. of Agriculture. 
Plate VII. 
Leaves of Four Native American Species of Grapes Extensively Used as Stocks 
on Which to Graft Vinifera Varieties. 
Fig. l.—Vitisrupestris, upper and lower side of leaf, one-fourth natural size. Fig. 2. — Vitis aestivalis, 
upper and lower side of leaf, one-fourth natural size. Fig. 3. — Vitis labrusca, upper and lower side 
of leaf, one-seventh natural size. Fig. 4. — Vitis riparia, upper and lower side of leaf, two-fifths 
natural size. 
