Grape. Mustang Grape of Florida.

Vine slender, usually running on the ground or over low bushes.
Canes angular; internodes short; tendrils intermittent, simple.
Leaves smaller and thinner than Rotundifolia and rather more
circular in outline; not lobed; teeth open and spreading; petiolar
sinus V-shaped; both surfaces smooth, rather light green. Cluster
with more berries but about the same size as in Rotundifolia.
Berry one-third to one-half the diameter, with thinner and more
tender skin; black, shining; pulp less solid, more acid and
without muskiness. Seeds about one-half the size of those of
Rotundifolia, similar in other respects. Leafing, flowering and
ripening fruit very late.

The habitat of _V. Munsoniana_ is central and southern Florida and the
Florida Keys. It extends south of the habitat of Rotundifolia and
blends into this species at their point of meeting. Munsoniana appears
to be a variation of Rotundifolia, fitted to subtropical conditions.
It is tender, not enduring a lower temperature than zero. In the
matter of multiplication, it differs from _V. rotundifolia_ in that it
can be propagated readily from cuttings. Like Rotundifolia it is
resistant to phylloxera.

3. _Vitis rupestris_, Scheele. Mountain Grape. Rock Grape. Bush Grape.
Sand Grape. Sugar Grape. Beach Grape.

A small, much branched shrub or, under favorable circumstances,
climbing. Diaphragm thin; tendrils few, or if present, weak,
usually deciduous. Leaves small; young leaves frequently folded on
midrib; broadly cordate or reniform, wider than long, scarcely
ever lobed, smooth, glabrous on both surfaces at maturity;
petiolar sinus wide, shallow; margin coarsely toothed, frequently
a sharp, abrupt point at terminal. Cluster small. Berries small,
black or purple-black. Seeds small, not notched; beak short,
blunt; raphe distinct to indistinct, usually showing as a narrow
groove; chalaza pear-shaped, sometimes distinct, but usually a
depression only. Leafing, blossoming and ripening early.

This species is an inhabitant of southwestern Texas, extending
eastward and northward into New Mexico, southern Missouri, Indiana and
Tennessee to southern Pennsylvania and the District of Columbia. Its
favorite places are gravelly banks and bars of mountain streams or the
rocky beds of dry watercourses. This species is rather variable both
in type and growth. It was