_A._ Skin of mature berry separating freely from the pulp. _B._ Nodes without diaphragms; tendrils simple. 1. _V. rotundifolia._ 2. _V. Munsoniana._ _BB._ Nodes with diaphragms; tendrils forked. _C._ Leaves and shoots glabrous at maturity and without bloom; tendrils intermittent. _D._ Leaves thin, light, bright green, generally glabrous below at maturity except perhaps in the axils of the veins with a long or at least a prominent point and usually long and sharp teeth or the edge even-jagged. _E._ Leaves broader than long; petiolar sinus usually wide and shallow. 3. _V. rupestris._ _EE._ Leaves ovate in outline; petiolar sinus usually medium to narrow. 4. _V. vulpina._ _DD._ Leaves thick, dull colored or grayish-green, often holding some close, dull pubescence below at maturity, shoots and leaves nearly always more or less pubescent when young; the teeth mostly short. 5. _V. cordifolia._ 6. _V. Berlandieri._ _CC._ Leaves rusty or white tomentose or glaucous blue below, thick or at least firm. _D._ Leaves flocculent or cobwebby or glaucous below when fully grown. 7. _V. aestivalis._ 8. _V. bicolor._ _DD._ Leaves densely tomentose or felt-like beneath throughout the season; covering white or rusty white. _E._ Tendrils intermittent. 9. _V. candicans._ _EE._ Tendrils mostly continuous. 10. _V. Labrusca._ _AA._ Skin and pulp of mature berry cohering. (Old World.) 11. _V. vinifera._ 1. _Vitis rotundifolia_, Michx. Muscadine Grape. Bull Grape. Bullet Grape. Bushy Grape. Bullace Grape. Scuppernong. Southern Fox Grape.