Description
Mature vines have loose, fissured bark, and may attain several inches in diameter. Leaves are alternate, often with opposite tendrils or inflorescences, coarsely toothed, 5–25 cm (2–10in) long and 5–20 cm (2–8in) broad, sometimes with sparse hairs on the underside of veins.
The inflorescence is paniculate 4–15 cm (1.5–6 in) long and loose, and the flowers are small, fragrant, dioecious, and white or greenish in color. V. riparia blooms in May or June and produces a small 6–15 mm blue-black berry (grape) with a bloom, seeded, juicy, edible, vinous in flavor, lacking the "foxy" characteristics of Vitis labrusca, but usually quite sour and herbaceous. V. riparia has a wide range and may deviate considerably in detail from the above general description. White berries, perfect flowers, large clusters, large berries, and sweet fruit are among the known variations. However, some observers consider such variations as evidence of natural hybridization with other species of grapes.
Read more about this topic: Vitis Riparia
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