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Herbs perennial, 5–30 cm tall. Stems together with petioles spreading pilose, rarely glabrescent. Petiole 3–20 cm; leaf blade 3-foliolate, rarely pinnately 5-foliolate; leaflets sessile or central one shortly petiolulate, abaxially greenish, adaxially green, obovate, elliptic or broadly ovate, 1–5 × 0.6–4 cm, abaxially pubescent or sometimes glabrescent, adaxially sparsely pubescent, base cuneate or broadly so, margin obtusely or acutely incised serrate, apex obtuse. Inflorescence corymbiform, 2–4(or 5)-flowered, with a greenish, subulate or petiolate, leafletlike bract. Pedicel 1–3 cm, appressed pilose. Sepals ovate-lanceolate, apex caudate; epicalyx segments linear-lanceolate or subulate, shorter than sepals. Petals white, obovate, base tapering into a short claw. Stamens ca. 20, unequal. Carpels numerous. Aggregate fruit ripening red, ovoid. Achenes ovoid, not prominently rugose. Fl. Apr–Jun, fr. Jun–Sep. 2n = 14.




Source: Missouri Botanical Garden


