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..
C. Pringlei Sarg. Rhodora 3: 21. Feb. 1901. C. exclusa Sarg. Rhodora 5: 108. April 1903.
A tree, sometimes 25o high, with ascending branches, and spines 1'-2' long. Leaves ovate to oval, concave, 1 1/4' - 3' long, l'-2 3/4' wide, obtuse at the apex, rounded or abruptly cuneate at the base, twice serrate, very shal-lowly lobed, pubescent, becoming glabrate above, pubescent along the veins beneath, bright yellow-green; corymbs many-flowered, pubescent; flowers about 10" broad; stamens about 10; anthers pink; styles and nutlets 3-5; fruit short-ellipsoid to pyriform, pubescent, red, about 8" thick; calyx-lobes spreading, persistent; flesh thick, acid, edible.
Crataegus coccinea L. Sp. Pl. 476. 1753.
C. pedicillata Sarg. Bot. Gaz. 31: 226. 1901.
C. Ellwangeriana Sarg. Bot. Gaz. 33: 118. 1902.
A tree, sometimes 25o high, with ascending and spreading branches, armed with spines 1'-2' long. Leaves broadly ovate, acute or acuminate at the apex, broadly cuneate to truncate at the base, 11/4'-4' long, 1 1/4'-3 1/2' wide, serrate, doubly serrate or lobed, slightly pubescent becoming scabrous above, nearly glabrous beneath, membranous; corymbs glabrous or villous; flowers 8"-10" broad; stamens 10-20; styles and nutlets 3-5; fruit pyriform to short-ellipsoid, red, glabrous or slightly pubescent, 7"-10" thick; calyx-lobes rather persistent, erect or spreading.
C. albicans Ashe, Journ. E. Mitch. Soc. 172: 20. July 1901. C. Tatnalliana Sarg. Bot. Gaz. 35: 106. Feb. 1903. C. polita Sarg. Rhodora 5: 111. April 1903.
A shrub or small tree, sometimes 20° high, with spreading branches. Leaves broadly ovate to oblong-ovate, acute or acuminate at the apex, cordate, truncate or broadly cuneate at the base, 1 1/4'-3 1/2' long, 1 1/4'-3 1/2' wide, serrate, doubly serrate or lobed, membranous, glabrous or slightly pubescent when mature; corymbs many-flowered, glabrous to villous; flowers 8"-10" broad; stamens 5-10; styles and nutlets 3-5; fruit sub-globose to short-ellipsoid-pyriform, glabrous or villous, dark red, 5"-8" thick; calyx-lobes deciduous; flesh thick, edible.