This section is from the book "An Illustrated Flora Of The Northern United States, Canada And The British Possessions Vol2", by Nathaniel Lord Britton, Addison Brown. Also available from Amazon: An Illustrated Flora of the Northern United States, Canada and the British Possessions. 3 Volume Set..
A shrub or small tree up to 250 high, with ascending branches and numerous slender thorns 1'-2' long. Leaves ovate or ovate-oblong, subcoriaceous, glabrous, 3/4'-2 1/2' long, 1/2'-2 1/2' wide, acute at the apex, broadly cuneate to slightly cordate at the base, serrate or twice serrate with 2 or 3 pairs of acute lobes, the lower pair more deeply cut; corymbs glabrous, few-flowered, flowers 8" or 9" broad; calyx-lobes glabrous outside; stamens 10-20, the anthers usually pink, small; styles and nutlets 2 or 3; fruit globose to short-ellipsoixl, greenish-yellow or yellow, 4"-7" thick; sepals reflexed, usually deciduous; flesh hard at maturity.
C. Boyntoni Beadle, Bot. Gaz. 28: 409. Dec. 1899. Crataegus polybracteata Ashe, Journ. E. Mitch. Soc. 162: 79.
Feb. 1900. C. Buckleyi Beadle, Bilt. Bot. Stud. 1: 25. 1901. C. foetida Ashe, Ann. Cam. Mus. 1: 389. 1902.
A round-topped, irregularly branched shrub or tree, sometimes 25° high. Spines occasional; leaves ovate to oval, acute at the apex, broadly cuneate or truncate, serrate or doubly serrate with acute or obtuse lobes towards the apex, 1 /34'-2 3/4' long, 1 1/2'-2 1/4' wide, yellow-green above, paler beneath, glabrous; corymbs often slightly pubescent, becoming glabrous; flowers about 10" wide; calyx-lobes but slightly toothed, sometimes entire, stamens 10-15; styles and nutlets 3-5; fruit subglobose, 5"-8" thick, orange-red or red-brown; flesh hard at maturity.
Shaly soils, eastern Massachusetts to central Michigan, South Carolina and central Tennessee. May-June; fruit ripe October.
A slender tree, with rough bark and ascending branches, sometimes 200 high, the thorns slender, ¥-2' long. Leaves obovate or ovate, acute or obtuse at the apex, cuneate at the base, 3/4'-2 1/4' long, £'-2' broad, dentate-serrate or doubly so, slightly pubescent above when young, glabrous when mature; petioles 3"-12" long, slightly winged above; corymbs few-flowered; pedicels and calyx slightly pubescent; flowers about 9" broad; calyx-lobes entire, glandular-margined; stamens about 10; anthers pink; styles usually 3 or 4; fruit ellipsoid-pyriform, yellowish-green, sometimes checked with red, about 8" thick; flesh hard at maturity.
Summits of sandy ridges, southeastern Virginia to Florida. Red haw. April; fruit ripe October.