Rose Family. June - July.
A shrub 1 - 5 feet high, found on margins of swamps, rocky shores. Newfoundland to New York and Eastern Pennsylvania.
Crimson-pink, 5 divisions, outer divisions often with 1 - 2 small lobes.
Compound, usually 7 toothed leaflets, leaf-surface smooth and often shining above. Stipules (leafy formations at the bases of the leaves) more or less dilated. Prickles hooked.
A straight-stemmed shrub 2 - 7 feet high, found along borders of swamps and streams. Nova Scotia to Florida, westward to Minnesota and Mississippi. Leaflets 5 - 9, finely toothed, acute at each end, usually downy beneath. Stipules long and very narrow.
R. blanda. A bush 2 - 4 feet high, found in rocky, moist ground. Newfoundland to New England and westward. Outer divisions of the flowers covered with bristly hairs. Leaflets 5 - 7, toothed. Stipules dilated, usually toothless. Prickles usually conspicuous by their absence.
R. humilis - Outer divisions of the flower always more or less lobed. Leaflets usually 7, smooth and often shining, toothed. Stipules usually narrow. Stems generally low, bearing straight, slender prickles. Nova Scotia to Florida, westward to Minnesota, Missouri and Louisiana.
R. rubiginosa. Readily known by the aromatic odor of its leaves when crushed. Introduced from Europe.