Professor Gulley. According to Mississippi Station Bulletin No. 56, 1899, vine and fruit resemble those of Concord and fruit ripens irregularly about the same time. Yield not so large, more subject to rot.
Professor Hilgard. (Linc. Bourq.) Parents, Post-oak crossed with Herbemont; from Munson. Cluster large, shouldered, compact; berry medium, purple; juicy, sweet and sprightly; medium to late.
Profitable. (Lab. Rip.) A seedling of Elvira fertilized by Perkins; from Munson. Vigorous and productive, hardy; stamens upright, perfectly self-fertile; cluster medium to large, long, medium compact, shouldered; berry medium size, round, inclined to oblong, pale greenish-red; skin rather thin, tender; pulp tender, sweet, juicy; flavor pleasant and agreeable; season about with Concord.
Profusion. (Linc. Lab.) Ten-Dollar-Prize fertilized by Worden; from Munson, 1889. Very vigorous; stamens upright; cluster large, compact; berry small, black, adheres well; quality good; later than Concord in Texas.
Progress. (Lab. Vin.) Thought to be a hardy native Labrusca by Black Hamburg cross; from A. F. Rice, of South Weymouth, Massachusetts, previous to 1883. Good grower; cluster medium size, shouldered; berries large, dark red; skin thick, rather tender; quite pulpy, juicy, not high flavored; quality fair.
Progress. (Lab. Vin.) From John Burr, Leavenworth, Kansas, previous to 1885. Very vigorous, healthy, hardy; cluster large, compact, shouldered; berry large, medium, black, fine bloom; pulp tender, juicy, rich, vinous; quality best; season a little later than Concord.
Prolific. (Lab.) From Dr. Stayman about 1880. Vigorous, productive; clusters large, double-shouldered, compact, hang well on vine; berry large, black; season soon after Jewel.
Prolific Chicken Grape. (Rip.?) A wild grape from Goochland County, Virginia; mentioned by Prince in 1830. Very productive; flavor pleasant; ripens in August in Virginia.
Provost White. (Lab.) Noted by Strong in 1866 as a common wild variety of little value.
Prunella. (Vin. Lab.) A seedling from M. Vibert, of France, produced by crossing a Vinifera with Isabella, about 1842. Resembles Wilder very closely.