Hosackia yollabolliensis

Herbs mat-forming, 5–15 cm, glabrate; taprooted and with caudex. Stems 1–30+, usually decumbent, sometimes ascending, branched, slender, not fleshy. Leaves: stipules ovate, inconspicuous, scarious; petiolate; rachis straight, 0.7–1.5 cm; leaflets 3–5(–7), petiolulate, blades obovate to oblanceolate, 3–10 mm, apex usually acute, sometimes obtuse, surfaces glabrous. Peduncles ascending or spreading, 2–3 cm, longer than subtending leaf, elongating in fruit; bract subtending umbel, 1–3-foliolate. Umbels 1–3-flowered. Flowers (7–)8–10 mm; calyx color unknown, 5–6.5 mm, glabrous, tube obconic-cylindric, (1.5–)2–3 mm, lobes triangular to triangular-subulate, 0.5–1 mm, ± ciliolate; corolla banner yellow, wings and keel whitish yellow, wings ± equaling keel, claw ± equaling calyx tube, banner erect, keel apex not known. Legumes erect, brown, narrowly oblong, laterally compressed, 18–25 × 1.5–2 mm, leathery, not septate, glabrous. Seeds (2–)4–7, olive- to red-brown, oblong, 2–2.5 mm.

Phenology: Flowering summer.
Habitat: Open rocky, dry slopes, ridges, and summits, snowbeds and moist areas below, openings in red fir forests, moist gravelly or sandy areas, rocky loamy soils.
Elevation: 1600–2200 m.

Calif.

Discussion

Hosackia yollabolliensis is uncommon in the Yolla Bolly Mountains and South Fork Mountain of the North Coast Ranges in Humboldt and Trinity counties.

Selected References

None.

Lower Taxa