Roslyn. (Lab. Vin.) A seedling of Diana crossed with Hartford; from C. J. Copley, Stapleton, New York, about 1880. Bunch large, shouldered, very compact; berry large, round, sometimes compressed, purplish with thin bloom; skin thick; pulp firm, sweet with a strong musky flavor.
Roswither. (Lab. Bourq.) A seedling of Jewel; from L. Hencke, Collinsville, Illinois. Described by Mitzky, in 1893, as very productive and hardy; bunch and berry medium to large; dark purplish, nearly black; quality fine; ripens about ten days before Concord.
Ruby. (Lab.) A seedling from Geo. Haskell, Ipswich, Massachusetts. Hardy, variable in vigor; somewhat subject to rot; bunch medium, loose; berry above medium, round, dark ruby red; very good quality; ripens about with Hartford; stamens reflexed.
Ruby. (Lab. Vin. Rip.) A seedling of Elvira crossed with Brighton; from Munson, about 1890. Vigorous, healthy, not very hardy; bunches imperfectly filled, small, shouldered; berry medium, round, dull red with stripes, resembling Elvira in flavor and texture; ripens about with Concord.
Ruckland. (Lab. Vin.) Grown in Louisiana and said to have been brought from England. Munson pronounced it a Labrusca-Vinifera hybrid. Very late; red.
Rulander. (Bourq.) Amoreux; Red Elben; St. Genevieve. A southern grape, by some claimed to be a foreign seedling brought to this country by the early French settlers; probably native. Vigorous, short-jointed, healthy, not productive nor hardy; stamens upright; bunch medium, shouldered, very compact; berry small, roundish-oval, purplish-black; without pulp, juicy, sweet and rich; makes an excellent pale red wine closely resembling sherry; ripens last of July in the South.
Rupel. (Rup. Rip. Lab.) A seedling of Rupestris pollinated by July Twenty-fifth; from Munson. Cluster small; berry small, black; ripens early; stamens upright.
Rupert. (Linc. Rup. Lab. Vin. Bourq.) A cross between America and Brilliant; from Munson. Vigorous, not very hardy, variable in productiveness; stamens upright; clusters medium, slender, usually shouldered, moderately compact; berries medium, nearly round, dark dull reddish-black with blue bloom; skin thin, tough; flesh pale green, tender, melting, somewhat musky, with Post-oak flavor; fair; ripens with Worden.
Rustler. (Lab. Vin.) From Munson, about 1888; a seedling of Lindley crossed with Martha. Vine vigorous, not always hardy, variable in productiveness; stamens reflexed; clusters medium, cylindrical, compact, sometimes shouldered; berries medium, roundish; skin medium thick, tough, dull light green with gray bloom, covered with scattering russet dots; pulp pale green, tough, stringy, foxy, sweet, somewhat musky; fair to good; ripens about with Concord.
Rusty Coat. Described by Mississippi Station Bulletin No. 56 as healthy, fair yielder; bunches long, loose and irregular; berries medium, black; good.