Ribes watsonianum

Plants 1–2 m. Stems ascending to erect, copiously grayish-hairy and abundantly stipitate-glandular, very slightly if at all bristly; spines at nodes 1 or 3, 3–7(–10) mm; prickles on internodes absent. Leaves: petiole 2–4 cm, puberulent to pubescent, stipitate-glandular; blade broadly triangular, 3–5-lobed, cleft less than 1/2 to midrib, again 2–5 cleft, 2–5 cm, base truncate or cordate, surfaces thickly puberulent to pubescent, stipitate-glandular, lobes broad, rounded, margins coarsely crenate-denticulate, apex rounded. Inflorescences pendent, solitary flowers or 2(–3)-flowered racemes, 2–4 cm, axis pubescent, stipitate-glandular. Pedicels not jointed, 2–3 mm, pubescent, stipitate-glandular; bracts deltate, 2–3 mm, pubescent, stipitate-glandular. Flowers: hypanthium greenish or with some reddish tinge, tubular-campanulate, 2.5–3 mm, finely pilose, sparingly glandular; sepals not overlapping, reflexed, cream suffused with pink, narrowly oblong, 5.5–9 mm; petals connivent, erect, white, pinkish proximally, oblong, not conspicuously revolute or inrolled, 3.5–4 mm; nectary disc not prominent; stamens as long as or slightly longer than petals; filaments linear, 2–3 mm, glabrous; anthers white, oblong, 0.8–1.2 mm, apex rounded; ovary densely glandular-bristly; styles connate 3/4 their lengths, 6 mm, glabrous. Berries palatability not known, reddish, subglobose, 10 mm, densely yellowish-spiny.

Phenology: Flowering May–Jul.
Habitat: Canyons, ridges
Elevation: 1300-2200 m

Distribution

• Generated Map
• Legacy Map

Alta., B.C., Oreg., Wash.

Discussion

Ribes watsonianum occurs in the Cascade Range of Oregon, Washington, and British Columbia, and in Alberta. Analysis of combined datasets of ITS, ETS, psbA-trnH, and chloroplast restriction sites placed R. watsonianum as sister to sect. Grossularia (L. M. Schultheis and M. J. Donoghue 2004).

Selected References

None.

Lower Taxa

None.