usty pubescence below. (The north-Texas, southwestern
Missouri and northern Arkansas form shows little or no pubescence
but has fine prickly spines at base of shoots and shows much blue
bloom on shoots, canes and the under side of the leaves.) Fruit
small to large, usually larger than typical AEstivalis, usually
black, with heavy bloom. Seeds larger than AEstivalis, pear-shaped;
chalaza roundish.

Lincecumii inhabits the eastern half of Texas, western Louisiana,
Oklahoma, Arkansas and southern Missouri on high sandy land,
frequently climbing post-oak trees, hence the name, post-oak grape, by
which it is locally known.

Lincecumii has attracted considerable attention through the work of H.
Jaeger and T. V. Munson in domesticating it, both of whom considered
it one of the most, if not the most, promising form from which to
secure cultivated varieties for the Southwest. The qualities which
recommend it are: First, vigor; second, capacity to withstand rot and
mildew; third, hardiness and capacity to endure hot and dry summers
without injury; fourth, the large cluster and berry which were found
on certain of the wild vines. The fruit is characteristic because of
its dense bloom, firm, yet tender texture and peculiar flavor. The
cultivated varieties have given satisfaction in many sections of the
Central Western and Southern states. Like AEstivalis, it is difficult
to propagate from cuttings.

The north-Texas glaucous form of this variety mentioned in the
technical description above is the _V. aestivalis glauca_ of Bailey.
This is the type of Lincecumii that Munson has used in breeding work.

_Vitis aestivalis Bourquiniana_, Bailey. Southern AEstivalis.

Bourquiniana differs chiefly from the type in having thinner leaves;
the shoots and under side of the leaves are only slightly
reddish-brown in color; the pubescence usually disappears at maturity;
the leaves are more deeply lobed than is common in AEstivalis; and the
fruit is larger, sweeter and more juicy. Bourquiniana is known only in
cultivation. The name was given by Munson, who ranks the group as a
species. He includes therein many southern varieties, the most
important of which are: Herbemont, Bertrand, Cunningham and Lenoir,
grouped in the Herbemont section; and Devereaux, Louisiana and Warren,
in the Devereaux section. Munson has traced the history of this
interesting group and states that it was brought from southern France
to America o