Sp. Pl. 1: 201. 1753 ,.
Plants 0.3–2 m. Stems erect or spreading, strongly puberulent, pubescence often intermixed with glandular-hairs, becoming glabrate; spines at nodes 1–3 (–7), 2.2–13 mm; prickles on internodes absent or sparse to dense. Leaves: petiole (0.4–) 1–4 cm, finely and softly pubescent, sparsely to densely pubescent, or pilose, and glandular-puberulent or glabrous, sometimes abaxially more glandular, or glabrous; blade roundish to reniform, 3–5 (–7) -lobed, cleft 1/2 to midrib, (0.7–) 1.5–4 cm, base truncate to cordate, surfaces abaxially pilose to villous, sometimes glabrate or glabrous, stipitate and sessile-glandular, lobes oblong, oblong-cuneate, or cuneate-rounded, margins irregularly crenate-dentate into prominent, unequal teeth, apex rounded to broadly acute. Inflorescences spreading, solitary flowers or 2–3 (–4) -flowered racemes, 2–3 cm, axis glabrous or stipitate-glandular and puberulent to pilose, flowers evenly spaced. Pedicels not jointed, 1–6 mm, glabrous or villous stipitate-glandular and puberulent to pilose; bracts broadly ovate-deltate, 1–2 mm (much shorter than leaves), finely glandular-ciliate. Flowers: hypanthium green or greenish white to white or pinkish, narrowly tubular or campanulate to rotate, 1.4–5.5 (–6.6) mm, glabrous abaxially, villous-pubescent adaxially; sepals not overlapping, spreading to somewhat reflexed, greenish white or greenish yellow, sometimes pinkish or purplish with slightly reddish tinge, broadly to narrowly oblong-ovate or elliptic-obovate, 1–6 mm; petals connivent, becoming separated, erect, white or pinkish, oblong-oblanceolate or obovate to oblong-obovate, flabelliform-reniform, or obovate-rhombic, not conspicuously revolute or inrolled, 1–3.5 mm; nectary disc not prominent; stamens as long as or only slightly longer than petals; filaments slightly expanded at base, 0.5–3.5 mm, glabrous; anthers cream, oblong-oval, 0.6–1.3 mm, apex rounded; ovary glabrous; styles connate 1/3–3/4 their lengths, 2.5–8 (–9) mm, pilose in proximal 1/2. Berries palatable, reddish, greenish purple, or deep purplish black, globose, 7–16 mm, glabrous.
Alta., B.C., Man., N.W.T., Nfld. and Labr. (Nfld.), Ont., Que., Sask., Yukon, Alaska, Idaho, Mich., Minn., Mont., N.Dak., Nebr., Nev., Oreg., S.Dak., Utah, Wash., Wis., Wyo.
Varieties 5 (5 in the flora).
|1||Styles 2.5-3.3 mm; hypanthia 1.4-3 mm; sepals 1-3.3 mm.||Ribes oxyacanthoides var. hendersonii|
|1||Styles 5.5-9 mm; hypanthia 1.5-6.6 mm; sepals 2.5-6 mm||> 2|
|2||Sepals finely pilose.||Ribes oxyacanthoides var. cognatum|
|2||Sepals glabrous or with scattered hairs||> 3|
|3||Peduncles 6-15 mm.||Ribes oxyacanthoides var. irriguum|
|3||Peduncles 2-6 mm||> 4|
|4||Leaf blades densely pilose abaxially, base truncate or subcordate; sepal apices rounded.||Ribes oxyacanthoides var. oxyacanthoides|
|4||Leaf blades finely pubescent abaxially, base deeply cordate; sepal apices truncate.||Ribes oxyacanthoides var. setosum|