seeds are pyriform and beak-like at
the base.

SPECIES OF AMERICAN GRAPES

The number of species of grapes in the world depends on the arbitrary
limits set for a species of this fruit, and knowledge of the genus is
yet too meager to set these limits with certainty. Indeed, the men who
have made grape species have seldom been able to outline the habitats
of their groups with much certainty. In habitat, it should be said,
grapes are confined almost wholly to temperate and subtropical
regions. However, the grape-grower is not much concerned with species
of grapes other than those that have horticultural value. Of these, in
America, there are now ten more or less cultivated either for fruit or
for stocks. The following descriptions of these ten species are
adapted from the author's The Grapes of New York, published in 1908 by
the state of New York (Chapter IV, pages 107-156).

CONSPECTUS OF CULTIVATED SPECIES OF VITIS

_A._ Skin of mature berry separating freely from the pulp.
_B._ Nodes without diaphragms; tendrils simple.
1. _V. rotundifolia._
2. _V. Munsoniana._
_BB._ Nodes with diaphragms; tendrils forked.
_C._ Leaves and shoots glabrous at maturity and without
bloom; tendrils intermittent.
_D._ Leaves thin, light, bright green, generally glabrous
below at maturity except perhaps in the axils of the
veins with a long or at least a prominent point and
usually long and sharp teeth or the edge even-jagged.
_E._ Leaves broader than long; petiolar sinus usually wide
and shallow.
3. _V. rupestris._
_EE._ Leaves ovate in outline; petiolar sinus usually
medium to narrow.
4. _V. vulpina._
_DD._ Leaves thick, dull colored or grayish-green, often
holding some close, dull pubescence below at maturity,
shoots and leaves nearly always more or less pubescent
when young; the teeth mostly short.
5. _V. cordifolia._
6. _V. Berlandieri._
_CC._ Leaves rusty or white tomentose or glaucous blue below,
thick or at leas