Ribes inerme


Mem. New York Bot. Gard. 1: 202. 1900,.

Synonyms: Grossularia inermis (Rydberg) Coville & Britton Ribes divaricatum var. inerme (Rydberg) McMinn
Treatment appears in FNA Volume 8. Treatment on page 35. Mentioned on page 13.

Plants 1–3 m. Stems erect to sprawling, glabrous or sparsely retrorse-bristly when young and with black, sessile glands; spines at nodes sometimes absent or 1(–3), 1–8(–12) mm; prickles on internodes usually absent. Leaves: petiole (0.4–)1–5.5 cm, tomentose to pilose, with few longer, slender, stipitate-glandular hairs; blade broadly ovate or pentagonal, 3–5-lobed, cleft nearly 1/2 to midrib, sometimes lateral lobes again less deeply cut into larger distal and smaller proximal segments, 1.5–8 cm, base rounded to broadly cordate, surfaces glabrous, sparsely pubescent, or pilose-villous, usually ciliate, lobes acutish or oblong-rounded, margins deeply crenate-serrate or coarsely round-toothed, apex acute or rounded. Inflorescences pendent, solitary flowers or 2–5-flowered racemes, 1.5–3.5 cm, axis glabrous, flowers evenly spaced. Pedicels not jointed, (1.5–)2.3–5.5(–8) mm, glabrous; bracts ovate, 1–3 mm, glandular-ciliolate. Flowers: hypanthium green or greenish white, narrowly tubular to tubular-campanulate, 1.5–3.5 mm, glabrous or densely pilose to arachnoid-pubescent adaxially; sepals not overlapping, spreading to curved-reflexed (extended in fruit), white or greenish to purplish or reddish margined or tinged, oblong or oblong-lanceolate to narrowly lanceolate, 2.5–5 mm; petals connivent, erect, whitish or pinkish, broadly cuneate-obovate or cuneate-flabellate to cuneate or oblong, not conspicuously revolute or inrolled, 1–2.3 mm; nectary disc not prominent; stamens nearly 2 times as long as petals; filaments linear, 1.8–3.1 mm, mostly glabrous; anthers cream, ovate, 0.6–1.1 mm, apex with cup-shaped gland; ovary glabrous; styles connate 1/3–3/4 their lengths, 4.5–7 mm, proximally pilose-villous to middle or throughout. Berries palatable, greenish or reddish purple to gray-black, nearly globose or globose, 7–11 mm, glabrous. 2n = 16.


V8 65-distribution-map.gif

Alta., B.C., Ariz., Calif., Colo., Idaho, Mont., N.Mex., Nev., Oreg., Utah, Wash., Wyo.


Varieties 2 (2 in the flora).

Ribes inerme has strikingly pilose-villous styles that are sometimes green proximally and reddish distally, with the stigmas sometimes dark green.

Selected References



1 Sepals glabrous; leaf blades glabrous (except for soft ciliation) or sparsely pubescent; peduncles 5-12 mm Ribes inerme var. inerme
1 Sepals pilose; leaf blades pilose-villous; peduncles 10-15 mm. Ribes inerme var. klamathense