8. R. lùcida, Ehrh. Stems often tall and stout (a few inches to 6° high), _with at length stout and usually more or less hooked spines; stipules_ usually naked, _more or less dilated; leaflets_ (mostly 7) dark green, rather thick, _smooth and often shining above_; flowers corymbose or solitary; outer sepals frequently with 1 or 2 small lobes.--Margins of swamps or moist places, Newf. to N. Eng., N. Y., and E. Penn.
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.
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.)
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.)