9. R. hùmilis, Marsh. Stems usually low (1–3°) and more slender, less leafy, with straight slender spines, spreading or sometimes reflexed; stipules narrow, rarely somewhat dilated; leaflets as in the last, but usually thinner and paler; flowers very often solitary; outer sepals always more or less lobed. (R. lucida of most authors.)—Mostly in dry soil or on rocky slopes, Maine to Ga., west to Minn., Mo., Ind. Terr., and La.
10. R. nítida, Willd. Low, nearly or quite glabrous throughout, the straight slender spines often scarcely stouter than the prickles which usually thickly cover the stem and branches; stipules mostly dilated; leaflets bright green and shining, usually narrowly oblong and acute at each end; flowers solitary (rarely 2 or 3); sepals entire.—Margins of swamps, Newf. to N. Eng.
Naturalized species.
R. canìna, L. (Dog Rose.) Stems armed with stout recurved spines, without prickles, the branches sometimes unarmed; leaflets 5–7, elliptical or oblong-ovate, glabrous or somewhat pubescent, simply toothed, not resinous-puberulent; flowers solitary (or 2–4) on usually naked pedicels; sepals pinnatifid, deciduous; fruit oblong-ovate to nearly globular.—Roadsides, E. Penn., Tenn., etc. (Int. from Eu.)
R. rubiginòsa, L. (Sweetbrier. Eglantine.) Resembling the last, but of more compact habit, the leaflets densely resinous beneath and aromatic, and doubly serrate; the short pedicels and pinnatifid sepals hispid. (Incl. R. micrantha, Smith; less aromatic, with oblong fruit and glabrous styles.)—N. Scotia and Ont. to S. C. and Tenn. (Int. from Eu.)
16. PỲRUS, L. Pear. Apple.
Calyx-tube urn-shaped, the limb 5-cleft. Petals roundish or obovate. Stamens numerous. Styles 2–5. Pome fleshy or berry-like; the 2–5 carpels or cells of a papery or cartilaginous texture, 2-seeded.—Trees or shrubs, with handsome flowers in corymbed cymes. (The classical name of the Pear-tree.)
§ 1. MÀLUS (Apple). Leaves simple; cymes simple and umbel-like; pome fleshy, globular, sunk in at the attachment of the stalk.
1. P. coronària, L. (American Crab-Apple.) Leaves ovate, often rather heart-shaped, cut-serrate or lobed, soon glabrous; styles woolly and united at base.—Glades, Ont. and W. New York to N. C., west to Minn., Kan., and La. May.—Tree 20° high, somewhat thorny, with large rose-colored very fragrant blossoms, few in a corymb; fruit fragrant and greenish.
2. P. angustifòlia, Ait. Resembling the last, but with leaves oblong or lanceolate, often acute at base, mostly toothed, glabrous; styles distinct.—Glades, Penn. to Fla., west to S. Ind., Kan., and La. April.