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..
Crataegus fecunda Sarg. Bot. Gaz. 33: 1ll. 1902.
A small tree, sometimes 25° high, with spreading branches. Thorns numerous, 1 1/2'-2 1/2' long; leaves oblong-obovate to oval, 1 1/4'-3 1/2' long, 3/4'-2 3/4' broad, doubly serrate, acute at the apex, cuneate at the base, dark green and shining with veins strongly marked above, paler and glabrous beneath; corymbs slightly villous; flowers about 10" wide; calyx-lobes coarsely glandular-serrate; stamens about 10; anthers purple; styles and nutlets 2-4; fruit short-ellipsiod to subglobose, 10"-12" long, orange-red, slightly pubescent; calyx-lobes erect, flesh thick.
Rich bottom lands, Illinois and Missouri in the vicinity of St. Louis. May; fruit ripe October.
Mespilus cuneiformis Marsh. Arb. Am. 88. 1785.
C. disperma Ashe, Journ. E. Mitch. Soc. 171: 14. 1900.
C. peoriensis Sarg. Bot. Gaz. 31: 5. 1901.
C. grandis Ashe, Journ. E. Mitch. Soc. 172: 9. 1901.
C. pausiaca Ashe, Ann. Carn. Mus. 1: 390. 1902.
C. porrecta Ashe, Ann. Carn. Mus. 1: 391. 1902.
A small tree, sometimes 250 high, with widely spreading branches, the bark dark brown, scaly. Spines numerous, often branched, £'-7'; leaves oblanceolate-obovate, acute at the apex, cuneate at the base, serrate or doubly serrate, 1'-2 1/2' long, 1/2'-1 1/2' wide, dark vivid yellow-green, glabrous and impressed-veined above when mature; corymbs usually slightly pubescent; flowers 6"-8" wide; stamens 10-15, anthers dark pink; styles and nutlets 2-4; fruit ellipsoid-pyriform, scarlet or dark red, about 5" thick.
Western New York and Pennsylvania to southwest Virginia, west to central Illinois. Intermediate between C. Crus-galli and C. punctata. May; fruit ripe October.
A flat-topped tree, usually with horizontal branches, but branches sometimes ascending, becoming up to 30o high. Spines light gray, 3/4'-2' long; leaves obovate to oblong, 3/4'-3' long, 1/4'-2' broad, impressed-veined and dull gray-green above, pubescent, acute or obtuse at the apex, sharply cuneate at the base, serrate, doubly serrate or lobed at the apex; corymbs tomen-tose or canescent; flowers about 10" broad; stamens about 20, anthers white or pink; styles and nutlets usually 3 or 4; fruit yellow or red, short-ellipsoid, 6"-12" thick.
Quebec to Pennsylvania, Minnesota, Iowa and Kentucky. June; fruit ripe October-November.