This section is from the book "An Illustrated Flora Of The Northern United States, Canada And The British Possessions Vol2", by Nathaniel Lord Britton, Addison Brown. Also available from Amazon: An Illustrated Flora of the Northern United States, Canada and the British Possessions. 3 Volume Set..
Vitis rotundifolia Michx. Fl. Bor. Am. 2:
231. 1803. Vitis vulpina T. & G. Fl. N. A. 1: 245.
1838. Not L. 1753. Muscadinia rotundifolia Small, Fl. SE. U. S. 757. 1903. Trailing or high-climbing, glabrous or nearly so throughout; tendrils simple, intermittent, sometimes few; bark close, not shreddy; pith continuous through the nodes. Leaves nearly orbicular, 2-3' wide, dark green, shining, dentate with large triangular teeth; inflorescence dense; berries few, purple, 5"-9" in diameter, without bloom, tough, musky; seeds several, flat, wrinkled, notched at the apex; raphe indistinct.
In moist, often sandy soil, Delaware to Indiana, Kentucky, Missouri, Kansas, south to Florida, Texas and Mexico. Muscadine grape. The original of the Scuppernong. The berries fall away singly. Mav. Fruit ripe Aug.-Sept.