Colonial, only half-shrubby; stems under 1 m, usually densely prickly; prickles slender, straight, unequal, the infrastipular and internodal ones essentially alike; stipules pubescent, usually entire, or glandular-dentate toward the tip; lfls (7)9 or 11, 1-4 cm, firm, obovate or obovate-oblong, sharply serrate, very often pubescent beneath; fls corymbose, terminating the nearly herbaceous stems of the season and often also on short lateral branches from older stems; hypanthium and pedicel usually glabrous or nearly so; sep persistent, often becoming erect and connivent; pet pink (white) to deep rose, 1.5-3 cm; hips purplish or red, 10-15 mm thick; 2n=28. Prairies and plains, or in open or brushy sites eastward; N.Y. to Alta., s. to D.C., Ind., Mo., Tex., and Colo. (R. conjuncta; R. pratincola; R. suffulta)
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.