P. SANGUISÓRBA, L. (GARDEN BURNET.) Stamens 12 or more in the lower flowers of the globular greenish head, with drooping capillary filaments, the upper flowers pistillate only; stems about 1° high; leaflets numerous, small, ovate, deeply cut.--Fields and rocks, N. Y. to Md. (Adv. from Eu.) 15. RÒSA, Tourn. ROSE. Calyx-tube urn-shaped, contracted at the mouth, becoming fleshy in fruit. Petals 5, obovate or obcordate, inserted with the many stamens into the edge of the hollow thin disk that lines the calyx-tube and within bears the numerous pistils below. Ovaries hairy, becoming bony achenes in fruit.--Shrubby and usually spiny or prickly, with odd-pinnate leaves, and stipules cohering with the petiole; stalks, foliage, etc., often bearing aromatic glands. Many of the species are very variable in their characters, and are often indeterminable upon imperfect specimens. (The ancient Latin name.) [*] _Styles cohering in a protruding column, as long as the stamens._ 1. R. setígera, Michx. (CLIMBING or PRAIRIE ROSE.) Stems climbing, armed with stout nearly straight scattered prickles, not bristly; leaflets 3--5, ovate, acute, sharply serrate, smooth or downy beneath; stalks and calyx glandular; flowers corymbed; sepals pointed; petals deep rose-color changing to white; fruit (hip) globular.--Borders of prairies and thickets, Ont. to Ohio, S. C., and Fla., west to Wisc., Neb., and Tex.; also cultivated. July.--The only American climbing rose, or with united protruding styles; strong shoots growing 10--20° in a season. [*][*] _Styles distinct; sepals connivent after flowering and persistent; pedicels and receptacles naked._ [+] _Fruit oblong-obovate to oblong; infrastipular spines usually none._ 2. R. Engelmánni, Watson. Stems usually 3--4° high or less; infrastipular spines, when present, straight and slender; prickles often abundant; leaflets 5--7, often somewhat resinous-puberulent beneath and the teeth serrulate; flowers solitary; sepals entire, naked or hispid; fruit 6--12´´ long.--Whisky Island, L. Huron, shores of L. Superior, and west to the Red River valley, and in the mountains from N. Mont, and N. Idaho to Col. [+][+] _Fruit globose; infrastipular spines none; acicular prickles often present._ 3. R. blánda, Ait. Stems 1--3° high, _wholly unarmed_ (occasionally with a few or very rarely numerous prickles); _stipules dilated_, naked and entire, or slightly glandular-toothed; _leaflets 5--7_, usually oblong-lanceolate, _cuneate at base and petiolulate, simply serrate, not resinous_; flowers usually large, corymbose or solitary; _sepals hispid, entire_.--On rocks and rocky shores, Newf. to N. Eng., central N. Y., Ill. (La Salle Co.), and the region of the Great Lakes.