128 
ROSACEJE. (ROSE FAMILY.) 
7. It. micrautlia, Smith. (Small-flowered Sweet-Bri¬ 
er.) Prickles all uniform and hooked ; branchlets sparingly bristly ; 
fruit (small) elliptical and ovate, the calyx-lobes deciduous. — Road¬ 
sides, &c., in E. New England, with No. 6, which it too closely re¬ 
sembles, but is regarded as distinct by most British Botanists. 
Suborder III. POMEiE. The Pear Family. 
18. CRATi«V$, L. Hawthorn. White Thorn. 
Calyx-tube urn-shaped, the limb 5-cleft. Petals 5, roundish. 
Stamens many, or only 10 - 5. Styles 1-5. Fruit (calyx-tube) 
fleshy, containing 1 - 5 bony 1-seeded carpels.—Thorny shrubs 
or trees, with simple and mostly lobed leaves, and white (rarely 
rose-color) blossoms. (Name from Kpdros, strength , on account 
of the hardness of the wood.) 
* Corymbs many-flowered. 
■*“ Fruit small (deep red). Introduced. 
1. C. Oxyacuntha, L. (English Hawthorn.) Smooth; 
leaves obovate, cut-lobed and toothed, wedge-form at the base; styles 
1 ~ ^ i fruit globose-ovoid. — More or less naturalized in the Atlantic 
States. May. 
2. C. cordata, Ait. (Washington Thorn.) Smooth; leaves 
broadly ovate, often heart-shaped, pointed, variously cut and serrate, 
mostly 3-lobed near the base; styles 5; fruit depressed-globose (not 
larger than peas). — Employed for hedges, especially in the Middle 
Slates ; probably wild in W. Penn. Common farther south. 
■*--*- Fruit larger, globular or pear-shaped, often eatable; calyx , with 
the edges of the leaves , often glandular. 
3. C. coccinea, L. (Scarlet-fruited Thorn.) Smooth 
or downy ; leaves roundish-ovate , thin, sharply cut and toothed, 5 - A- 
lobed, abrupt or heart-shaped at the base, on slender petioles ; spines 
stout ; styles 3 - 5 ; fruit bright red, globose . — Rocky banks, com¬ 
mon. May. — A low, round-headed tree, with many varieties. 
4- C. tomentosa, L. (Black or Pear Thorn.) Leases 
oval or ovate-oblong , narrowed abruptly at the base into a short mar¬ 
gined petiole , cut-toothed towards the apex, smooth and furrowed 
above, woolly beneath when young, like the corymbs ; styles 3 ; fruit 
orange-color, or yellow marked with red, pear-shaped. (C. pyrifolkh 
Hit.) — Thickets, common. May, June. — A tall shrub rather than 
a tree, with fragrant flowers and large leaves. 
5. C. punctata, Jacq. (Dotted Thorn.) Leaves wedge- 
obovate , cut-serrate towards the apex, tapering into a slender petiole , 
