suitable for
Rotundifolia is that in which cotton grows, and it thrives best in the
lower portions of the cotton-belt of the United States.

The fruit of Rotundifolia is very characteristic. The skin is thick,
has a leathery appearance, adheres strongly to the underlying flesh
and is marked with lenticel-like russet dots. The flesh is more or
less tough but the toughness is not localized around the seed as in
the case of Labrusca. The fruit and most of the varieties of the
species are characterized by a strong, musky aroma and are lacking in
sugar and acid. Some varieties yield over four gallons of must to the
bushel. Wine-makers are divided in opinion as to its value for
wine-making, but at present the most promising outlook for
Rotundifolia varieties is as wine, grape-juice and culinary grapes.
Rotundifolia does not produce fruit suitable for shipping as dessert
grapes chiefly because the berries ripen unevenly and when ripe drop
from the cluster. The common method of gathering the fruit of this
species is to shake the vines at intervals so that the ripe berries
drop on sheets spread below the vines. The juice which exudes from the
point where the stem is broken off causes the berries to become
smeared and gives them an unattractive appearance. Owing, however, to
the tough skin, the berries do not crack as badly as other grapes
would under the same conditions, but nevertheless they are not adapted
to long-distance shipments. Under reasonably favorable conditions, the
vines attain great age and size and when grown on arbors, as they
often are, and without pruning, they cover a large area.

Rotundifolia is remarkably resistant to the attacks of all insects and
to fungal diseases. The phylloxera do not attack its roots and it is
considered as resistant as any other, if not the most resistant of all
American species. The vines are grown from cuttings only with
difficulty and this prevents the use of this species as a resistant
stock. However, under favorable circumstances, and with skillful
handling, this is a successful method of propagation. Under
unfavorable circumstances, or when only a few vines are desired, it is
better to depend on layers. As a stock upon which to graft other
vines, this species has not been a success. There is great difficulty
in crossing Rotundifolia with other species, but several Rotundifolia
hybrids are now on record.

2. _Vitis Munsoniana_, Simpson. Florida Grape. Everbearing grape. Bird