This section is from the book "The Standard Cyclopedia Of Horticulture Vol2", by L. H. Bailey. See also: Western Garden Book: More than 8,000 Plants - The Right Plants for Your Climate - Tips from Western Garden Experts.
(C. parvifolia, Ait. C. tomentosa, Eggleston, not Linn. C. florida, Loud.). Dense, low shrub, with numerous slender spines, rarely spineless, 3-8 ft.: leaves on short not glandular petioles, cuneate, obovate or oblong-obovate, irregularly or doubly cren-ate-serrate, pubescent on both sides, at length glabrous above, 1/2-1 1/2 in- long: flowers 1/2in. across, 1-3-flowered corymbs; calyx pubescent, with large serrate lobes: fruit pyriform or globose, yellow, 1/3 in. across, with 3-5 stones. May, June. Ga. and Ala. to Fla. S.S. 4:191.
Shrub, to 12 ft., with slender straight spines: leaves oval or ovate, acute, cuneate at the base, crenate-serrate and often slightly lobed, at maturity glabrous and lustrous above, pubescent below, 1/2-l 1/2 in. long: flowers 1/2in. across, in 2-6-flowered, pubescent corymbs; calyx-lobes glandular-serrate: fruit globose, 1/3in. across, dull red, with 3-5 stones. May; fruit Oct. Va. to Ga. and Ala.
Tree, to 20 ft.: branches wide-spreading, with thin nearly straight spines: leaves broadly obovate or elliptic, acute or nearly rounded, cuneate at base, coarsely and doubly serrate, on vigorous shoots usually slightly lobed, the teeth tipped with red glands, at maturity puberulous only on the veins below, about 2 in. long; petioles glandular, short: corymbs few-fid., slightly villous; calyx-lobes glandular-serrate; flowers 3/4in. across; stamens 20, with purple anthers: fruit ovoid, dark orange-brown, 1/2in. long, with dry and mealy flesh and 5 stones. April; fruit in Oct. Ga. and Fla. S.S. 13:693. - The true C. flava is not in cultivation; the plant now cult, as C. flava is quite different and is apparently not very closely related to this species; it has so far not been found growing wild in E. N. Amer., though it was apparently introduced from the southern states. As it has not yet been determined to which species it belongs, it may be enumerated here as variety lobata, Lindl. Shrub or small tree: leaves ovate or obovate, cuneate at the base, acute, crenately serrate and often slightly lobed, at maturity pubescent on the veins beneath, 1-2 in. long: corymbs pubescent, few-flowered; stamens 10: fruit pyriform, green or reddish with hard flesh, and 3-5 stones.
B.R. 23:1932, 1939. G.C. III. 27:404-Tender.
A shrub or small tree, sometimes to 20 ft., with spreading branches and slender zigzag branchlets armed with thin straight spines 1-1 1/2 in. long: leaves broadly obovate or oval, acute or rounded at the apex, narrowed into the short petiole, serrate usually only above the middle and often slightly lobed, with gland-tipped teeth, pubescent on both sides while young, at maturity glabrous, dark yellow-green and thickish, 3/4-1 1/2 in. long: flowers 3/4in. across, in 3-6-flowered compact pubescent corymbs; calyx-lobes glandular-serrate: fruit globose, 1/2in. across, dull orange-red, with 3-5 stones. May; fruit Oct. Va. to Ga. and Tenn. S.S. 13:698. - This species has proved hardy at the Arnold Arboretum.
(C. Calpodendron, Medikus. C. pyrifolia, Ait. C. leucophloeos, Moench. C. Chapmanii, Ashe). Fig. 1101. Shrub or small tree, to 20 ft., with spreading branches unarmed or with short spines: leaves cuneate, obovate-oblong or elliptic, acute, serrate and often slightly lobed, dull green and usually finely glabrous above, below pubescent, 2-5 in. long: corymbs pubescent, compound and many-flowered; flowers 1/2in. across; calyx-lobes serrate: fruit usually oval, dull yellow or yellowish red, 1/4-1/3in. across, sweet and succulent, in upright corymbs; stones 2-3, with 2 furrows on the inner side. June; fruit Oct. Ont. to Minn., south to Tenn, and Mo. S.S. 4:183. G.F. 2:425 (adapted in Fig. 1101). Gn. 22, p. 145. B.R. 22:1877.
(C. macracantha variety succulenta, Rehd.). Tree, sometimes to 20 ft., with stout ascending branches, armed with numerous stout slightly curved spines: leaves elliptic, acute or acuminate, gradually narrowed into the stout winged petiole, coarsely and usually doubly serrate and with many short acute lobes, at maturity dark green, thickish and somewhat lustrous above, pale green and usually puberulous on the veins below, 2-3 in. long: flowers 2/3in. across, in many-flowered villous corymbs; stamens usually 20, sometimes 15: fruit globose, bright scarlet, 1/2- 2/3in. across, with juicy sweet flesh and 2-3 stones. May; fruit Sept., Oct. Que. and Ont. to Mass. and 111. S.S. 4:181 (as C. coccinea var macracantha).
Fig. 1101. Crataegus tomentosa. (X 1/2). No. 33.
(C. coccinea variety macracantha, Dudley). Fig. 1102. Shrub or small tree, to 20 ft., of dense growth, with numerous long and slender spines: leaves rather slender-petioled, broadly elliptic or ovate, doubly serrate, glabrous, at maturity thickish, shining and dark green above, almost glabrous beneath, 1-2 1/2 in. long: corymbs slightly villous; flowers 3/4in. across; stamens 10; calyx-teeth glandular-serrate: fruit subglobose, 1/3in. diam., dark cherry-red, shining, with usually 2-3 stones. May, June. W. N. Y. and Vt. to Pa. S.S. 13:689. B.R. 22:1912. L.B.C. 11:1012 (as C. glandulosa). A.G. 11:509. M.D.G. 1906:561. G.W. 5:245. - Sometimes cult, under the name of C. Douglasii. See page 3567.
Fig. 1102. Crataegus macracantha (X 1/3). No. 35.
Shrub or tree, to 30 ft.: branches spreading or somewhat ascending, spiny: leaves obovate, or roundish obovate, doubly serrate, glabrous or pubescent on the veins beneath when young, 2-3 in. ong: corymbs pubescent; stamens 10; anthers pink: fruit red; stones with 2 furrows on the inner side, sometimes nearly plain. May, June. - Origin unknown; by some thought to be a hybrid between C. Crus-galli and C. macracantha or C. succulenta. B.R. 22:1868. G.W. 8:114. variety variegata, Hort. Leaves variegated with yellowish white. F.W. 1877:65.