View source for Vitis girdiana

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Vitis girdiana, Munson. Valley Grape. Southern California Grape. Strong climbing vine, with thick diaphragms: lvs. 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-tomentose: clusters large and very compound, each one dividing into 3 or 4 nearly equal sections, which are in turn shouldered and thyrse-like: berries small, black and slightly glaucous, the skin thin but tough, pulp finally becoming sweet; seeds medium in size, pyriform. S. Calif., south of the 36th parallel. —Differs from V. californica in the more pubescent shoots and foliage, smaller and sharp teeth, decompound clusters, smaller less glaucous berries, and smaller seeds. Shoots of V. californica often bear lvs. with small and muticous teeth, and such specimens without the fl.-clusters are difficult to distinguish from this species. Some of the forms which have been referred to V. Girdiana are apparently hybrids with the wine grape, V. vinifera; the plant is imperfectly understood and its merits as a species are yet to be determined. It bears the name of H. H. Gird, of Calif.
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