Cleomella plocasperma

Plants 10–55 (–85) cm. Stems sparsely branched distally (central stem dominant); glabrous. Leaves: stipules (scarious) 0.5–1 mm; petiole 0.8–2 cm; leaflet blade linear-elliptic, 1.5–4.5 × 0.2–0.7 cm, thin, margins entire, apex acute, surfaces glabrous. Inflorescences racemes, terminating stems and branches, 1–15 cm (2–20 cm in fruit); bracts unifoliate, 5–25 mm. Pedicels ascending in fruit, 5–10 mm (6–12 mm in fruit). Flowers: sepals green, lanceolate, 0.9–2.2 × 0.5–0.7 mm, glabrous; petals yellow or orange, oblong, 3.5–5 (–7) × 1.4–1.6 (–2) mm, hairy abaxially; stamens yellow, 8–12 mm; anthers 1.5–1.9 mm; gynophore ascending, 6–10 mm in fruit; ovary rhomboidal, 1–1.5 mm; style 0.8–1.2 mm. Capsules ovoid to rhomboidal, 2.5–5 × 2.5–6 (–8) mm, glabrous. Seeds 2–4, silver-gray with black mottling, globose, 2–2.2 mm, smooth.

Phenology: Flowering mid spring–fall.
Habitat: Wet alkaline meadows, greasewood flats, around thermal springs
Elevation: 800-1400 m

Calif., Idaho, Nev., Oreg., Utah.

Discussion

Selected References

None.

Lower Taxa