20. Canbyi, Sarg

Shrub or bushy tree, to 20 ft.: branches wide-spreading, with thick usually straight spines: leaves oblong-obovate to elliptic, acute or obtuse, coarsely and often doubly serrate above the middle, glabrous, l 1/2 - 3 in. long: corymbs glabrous; calyx-lobes entire or sparingly serrate: fruit subglobose or ovoid, about 1/2in- long, dark crimson, with juicy flesh and 3-5 stones. May; fruit Oct. E. Pa., Del., Md. S.S. 13:638.

21. Fecunda, Sarg

Small tree, to 25 ft.: branches wide-spreading, with slender spines: leaves oblong-ovate to oval, usually acute, doubly serrate, with strongly marked veins, 1 1/2-3 in. long: corymbs slightly villous; calyx-lobes glandular-serrate: fruit subglobose to ovoid, 1/2- 3/4in. long, orange-red, with thick flesh and 2-3 stones. May; fruit Oct. Mo., 111. S.S. 13:641.

22. Arduennae, Sarg

Shrub or tree, to 20 ft.: branches spreading, forming a round-topped head: spines slender: leaves oblong-obovate, acute, acuminate or rounded, crenulate-serrate from below the middle, with obscure veins, 1 1/2-2 1/2 in. long: corymbs glabrous, pedicels slender; calyx-lobes entire or slightly serrate: fruit ovoid, dull dark crimson, about 1/2in. long, with 1-2 stones. May; fruit the middle of Sept. Pa. to 111., Mich, and Ont. S.M. 373.

23. Carrierei, Vauv

Small tree, to 20 ft., with spreading branches and stout spines: leaves elliptic or oblong-obovate, acute, pubescent below, glabrous above at length and lustrous, irregularly serrate, 3-4 in. long: corymbs rather few-flowered, pubescent; flowers large, with red disk; calyx-lobes linear, serrulate: fruit bright orange or brick-red, ovoid, about 1/2in. long, with 1-3 stones. May. R.H. 1883:108. G.C. III. 21:118, 119. - Probably hybrid between C. Crus-galli and C. mexicana, originated in France. Possibly not different is C. Lav-dlbk, Herincq, described with larger subglobose fruit

24. Persistens, Sarg

Low tree, 12 ft. or more: branches wide-spreading, with numerous stout spines to 2 in. long: leaves lanceolate to oblong-obovate, acuminate, cuneate at the base, coarsely serrate above the middle, at maturity glabrous, dark green and lustrous above, pale beneath, 2-3 in. long: corymbs slightly villous; flowers over 3/4in. across; calyx-lobes glandular-serrate above the middle or entire; stamens 20, anthers white; styles surrounded at the base by a broad ring of pale tomentum: fruit ovoid or slightly obovate, crimson, not lustrous, over 1/2in- across; flesh thick and mealy, with 2-3 stones. May: fruit in Oct. S.T.S. 2:190. -Of unknown origin, possibly a hybrid of C. Crus-galli. Raised at the Arnold Arboretum. The leaves remain on the branches unchanged until those of all the other hawthorns have fallen and the fruits persist until late into the winter. One of the most conspicuous of winter fruiting plants.

10. Mexicanae

25. Mexicana, Sess. & Moc

(C. hypolasia, Koch). Small tree, to 30 ft.: branchlets tomentose, unarmed or with short spines: leaves cuneate-oblong or elliptic-lanceolate, obtuse or acute, crenate-serrate and often slightly lobed toward the apex, pubescent above, sometimes nearly glabrous, tomentose below, 1 1/2_3 1/2 in. long: corymbs white-tomentose; flowers 3/4in. wide; calyx-lobes entire or with a few teeth at the apex; stamens 20, with pink anthers: fruit ovoid to pyriform, orange or dull orange-red, 3/4-l in. thick, edible, with 3-5 nutlets. March; fruit Oct., Nov. Mex. B.R. 22:1910.

11. Punctatae

26. Punctata, Jacq

Fig. 1100. Tree, to 25 ft.: branches horizontally spreading, with short, stout spines or unarmed: leaves obovate, obtuse or acute, narrowed at the base into a rather long margined petiole, irregularly serrate, on the shoots often slightly lobed, villous below, with impressed veins above, 2-4 in. long: corymbs villous; flowers large; calyx-lobes entire: fruit pyriform or subglobose, dull red, dotted, about 1/2in. across, with 5 stones. May; fruit Oct., falling soon. From Que. to Ont., 111. and Ga. S.S. 4:184. A.F. 28:805. variety aurea, Ait. (variety xanthocarpa, Roem. C. crocata, Ashe). fruit yellow.

Crataegus punctata. No. 26.

Fig. 1100. Crataegus punctata. No. 26.

27. Collina, Chapm

Shrub or small tree, occasionally 25 ft.: branches wide-spreading, with stout spines, on the trunk with large branched spines: leaves obovate or oval, acute, broadly cuneate at the base, irregularly, often doubly serrate, at maturity yellowish green above, paler below and glabrous except on the midrib: corymbs villous; calyx-lobes glandular-ciliate; anthers yellow: fruit subglobose, dull red, 1/3-1/2in. long, with yellow mealy flesh and usually 5 stones. May; fruit Oct. Va. to Tenn, and Ala. S.S. 13:654.

12. Aestivales

28. Aestivalis, Torr. & Gray

May Haw. Apple Haw. Tree, to 30 ft., with a round compact head, unarmed or with stout straight spines 1-1 1/2 in. long: leaves elliptic to oblong-obovate, acute or rounded, gradually narrowed into the 1/4-1 in. long petiole, sinuate-dentate or crenate-serrate, at maturity dark green and lustrous above, below, particularly on the veins, densely rusty-pubescent, 1 1/2-2 1/2 in. long: flowers with the leaves, 1 in. across, in 2-5-flowered glabrous corymbs; calyx-lobes entire or minutely glandular-serrate: fruit depressedglobose, fragrant, 1/2-3/4in. across, bright red, crowned by the conspicuous calyx, with juicy subacid flesh and 3-5 stones. Feb., March; fruit May. Fla. to Ark. and Texas. S.S. 4:192. - The fruit is made into preserves and jellies.