Ribes binominatum

Plants 0.1–1 m. Stems spreading to prostrate, pubescent; spines at nodes 3, 5–20 mm; prickles on internodes absent. Leaves: petiole 2–5 cm, puberulent to villous and stipitate-glandular; blade suborbiculate, 3–5-lobed, deeply cleft, 2–5 cm, base cordate, surfaces pubescent, not stipitate-glandular, lobes broadly cuneate, sides mostly straight, margins dentate-crenate, apex rounded. Inflorescences pendent, solitary flowers or 2–3-flowered racemes, 1–4 cm (much shorter than leaves), axis hairy, flowers evenly spaced. Pedicels not jointed, 1–2 mm, bristly; bracts lanceolate-ovate, 1.5–3 mm, puberulent. Flowers: hypanthium green, broadly campanulate, 2–3 (–4) mm, pubescent; sepals not overlapping, reflexed, greenish white to green with red margins, lanceolate, 4–6 mm; petals nearly connivent, erect, white to pink, oblong, flat or shallowly concave abaxially, 2–3 mm; nectary disc not prominent; stamens longer than petals; filaments slightly expanded at base, 2–4 mm, glabrous; anthers reddish-brown, oval, 0.2–0.5 mm, apex blunt; ovary densely bristly and glandular; styles connate 1/2 their lengths, 2–4 mm, glabrous. Berries palatability not known, yellow-green, ovoid, 8–10 mm, prickles yellow, nonglandular, stout, developing into spines, hairs glandular or eglandular.

Phenology: Flowering Apr–Jul.
Habitat: Montane and subalpine forests
Elevation: 1000-2600 m

Calif., Oreg.

Discussion

Of conservation concern.

Ribes binominatum occurs at relatively high elevations in the Coast Ranges of northern California and the Klamath Mountains of central and southern Oregon.

Selected References

None.

Lower Taxa