Flora of North America species comparison

sparsely branched distally (central stem dominant); glabrous.

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.

racemes, terminating stems and branches, 1–15 cm (2–20 cm in fruit);

bracts unifoliate, 5–25 mm.

ascending in fruit, 5–10 mm (6–12 mm in fruit).

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.

ovoid to rhomboidal, 2.5–5 × 2.5–6(–8) mm, glabrous.

2–4, silver-gray with black mottling, globose, 2–2.2 mm, smooth.