(Labrusca, Vulpina)
Endowed with a constitution enabling it to withstand cold to which most other grapes succumb, Janesville has made a place for itself in far northern localities. Moreover, the grapes ripen early, being about the first to color although they are not ripe until some time after coloring. The vine also is healthy, vigorous and productive. The fruit, however, is worthless when better sorts can be grown. The clusters and berries are small, the grapes are pulpy, tough, seedy, have a thick skin and a disagreeable acid taste. Janesville was grown by F. W. Loudon, Janesville, Wisconsin, from chance seed planted in 1858.
Vine vigorous, hardy, healthy, productive. Canes spiny, numerous, dark brown; nodes flattened; internodes long; tendrils intermittent or continuous, long, bifid or trifid. Leaves small, thin; upper surface glossy, smooth; lower surface pale green, lightly pubescent; leaf usually not lobed with terminus acute; petiolar sinus narrow, often closed and overlapping; basal and lateral sinuses lacking; teeth shallow. Flowers self-fertile, open very early; stamens upright.
Fruit early, keeps well. Clusters small, short, cylindrical, usually single-shouldered, compact; pedicel short, slender, covered with small, scattering warts; brush dark wine color. Berries round, dull black with heavy bloom, persistent, firm; skin thick, tough, adherent with dark wine-colored pigment, astringent; flesh pale reddish-green, translucent, juicy, tough, coarse, vinous, acid; fair in quality. Seeds adherent, one to six, large, broad, angular, blunt, dark brown.
Jefferson
(Labrusca, Vinifera)
Jefferson ([Plate XXI]) is an offspring of Concord crossed with Iona, and resembles Concord in vigor, productiveness and healthiness of vine, and Iona in color and quality of fruit. The vine produces its fruit two weeks later than Concord and is not as hardy, faults that debar it from taking high rank as a commercial grape. Fortunately the vines yield readily to laying down for winter protection so that even in commercial plantations it is not difficult to prevent winter injury. The bunches of Jefferson are large, well-formed, compact with berries of uniform size and color. The flesh is firm yet tender, juicy with a rich, vinous flavor and a delicate aroma which persists even after the berries have dried into raisins. The fruit ships and keeps well, the berries adhering to the cluster and the fruit retaining its freshness into late winter. Jefferson is widely distributed and is well known by viticulturists in eastern America. It is not particular as to localities, if the season be long and the climate temperate, and thrives in all soils. The variety originated with J. H. Ricketts, Newburgh, New York; it fruited first in 1874.
Vine vigorous, healthy, doubtfully hardy, productive. Canes short, numerous, light to dark brown; nodes enlarged, round; internodes short; tendrils intermittent, short, bifid or trifid. Leaves healthy; upper surface light green, older leaves rugose; lower surface pale green, strongly pubescent; leaf usually not lobed with terminus acute; petiolar sinus narrow, sometimes closed and overlapping; basal sinus usually absent; lateral sinus shallow, often a mere notch; teeth regular, shallow. Flowers self-fertile, open late; stamens upright.
Fruit late, keeps and ships well. Clusters large, cylindrical, usually single-shouldered, sometimes double-shouldered, compact; pedicel short, slender with a few inconspicuous warts; brush long, slender, pale yellowish-green. Berries medium in size, oval, light and dark red, glossy with thin bloom, persistent, very firm; skin thick, tough, free, slightly astringent; flesh light green, translucent, juicy, coarse-grained, tender, vinous; good to best. Seeds free, one to four, broad, short, blunt, plump, brown.