Muscadine Grapes Page: 2
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FARMERS' BULLETIN 1785
Figure 1.-Map of southeastern United States, showing the region where mus.
cadine grapes are most likely to succeed. This region has a frost-free period
averaging 200 days or more, at least 30 inches of rainfall, and rarely mini-
mum temperatures as low as 00 F.
The muscadine grapes include two botanical species, Vitis rotundi-
folia Michx. and V. munsoniana Simpson ex Munson, of which V. ro-
tundifolia is the more important. It is native throughout all the
muscadine region except the extreme South, and all the prominent
horticultural varieties belong to it. V. munsoniana is native only in
Florida, on the borders of the Gulf of Mexico, and near the south-
eastern coast of Georgia. V. rotundifolia (fig. 2) bears small clusters
of large berries (4 to 10) with large seeds, whereas V. munsoniana
(fig. 3) bears relatively large clusters of small berries (8 to 30) with
small seeds. The vines of V. munsoniana are slender and more trail-
ing than those of V. rotundifolia, but they do not climb so high. Their
leaves are generally smaller than those of V. rotundifolia; they have
narrow basal sinuses and less numerous but more prominent marginal
teeth. V. munsoniana has the everbearing habit; in August buds,
blossoms, and fruit in all stages of development may be found on the
vines at the same time.
The muscadines have hard wood, varying from ashy gray to gray-
ish brown or sometimes yellowish brown. Although the bark ad-
heres closely to the young branches, it sheds annually from the older
wood, especially from the trunks of vigorously growing vines. In
the young canes the pith is continuous through the nodes. The young
wood is covered with numerous small, prominent, warty lenticels.
The growing shoots are yellowish or reddish at the tip when young,
short-jointed, angled, or sometimes flattened and have intermittent,
relatively long, tough, strong, unforked, single tendrils of the same
color as the twig on which they are growing. The tendrils may girdle
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Dearing, Charles. Muscadine Grapes, pamphlet, 1947; Washington D.C.. (digital.library.unt.edu/ark:/67531/metadc97265/m1/4/: accessed July 17, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.