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. padifolia Sarg. Trees & Shrubs 2: 75. pl. 135. 1908.
A shrubby tree, sometimes 20° high, with erect and spreading branches forming an open crown. Leaves elliptic-ovate to ovate, |'-2|' long, •-2' wide, acute at the apex, cuneate or rounded at the base, coarsely serrate or doubly serrate, glabrous, membranous, light yellow-green above; corymbs glabrous; flowers 7"-9" broad; stamens about 10, the anthers pink; calyx-lobes ovate, acute, slightly glandular; styles and nutlets 2 or 3; fruit short-ellipsoid to depressed-globose, slightly angled, orange-red, 6" or 7" thick; calyx-tube but slightly enlarged, the lobes small, spreading, deciduous; flesh thin, hard, dry.
Crataegus populifolia Walt. Fl. Car. 147. 1788.
A shrub or small tree, about 15o high, with ascending and spreading branches forming a round crown. Spines slender, •-2' long; leaves deltoid-ovate or oblong-ovate, 3/4'-2 1/2' long, 1/2'-2' wide, serrate or doubly serrate with acute lobes, acute at the apex, truncate or cordate at the base, membranous, yellow-green above, paler beneath, usually glabrous, sometimes slightly appressed-pubescent above; petioles slender, 1/4'-3/4', glandular; corymbs few-flowered, glabrous (flowers not known); fruit globose, 4"-6" thick, light red, without angles; styles and nutlets 4 or 5; stamens about 10; calyx-lobes ovate-lanceolate, slightly toothed, appressed, usually deciduous; flesh hard at maturity.
Virginia to South Carolina. Fruit ripe in September.
C. straminea Beadle, Bot. Gaz. 30: 345. 1900.
Crataegus intricata Sarg. Rhodora 2: 28. 1901. Not J.
Lange. C. apposita Sarg. Bot. Gaz. 35: 103. 1903. C. Bissellii Sarg. Rhodora 5: 65. 1903.
An irregularly branched shrub, sometimes 10° high, with occasional spines 1'-2' long. Leaves elliptic-ovate, 3/4'~2 3/4' long, 1/2'-2' wide, subcoriaceous, bright yellow-green above, glabrous, acute at the apex, cuneate at the base, serrate or doubly serrate with 3 or 4 pairs of acute lobes towards the apex, the lower pair often more deeply cut; corymbs 3-7-flowered, glabrous; flowers 7"-10" broad; stamens about 10; anthers yellow or sometimes pink; styles and nutlets 3 or 4; fruit pyriform to ellipsoid, angular, about 5" thick, yellow-green; calyx-tube prominent, the lobes reflexed, strongly serrate towards the apex.
Rocky hills, western Vermont to southern Michigan, south through Connecticut to Delaware, to northern Alabama and southern Missouri. May; fruit ripe October.