Flora of North America species comparison

pale green, twigs moderately pubescent.

dark to olive green, twigs moderately to densely pubescent.

stipules not spinescent;

petiole 1.6–3.5 mm, pubescent;

pinnae 2;

petiolules 0.2 mm, densely pubescent;

rachillas 3–7 mm, not winged, with glandular patches on adaxial side, not surrounding leaflet pulvini;

leaflets (4 or)6(or 8), opposite, blades elliptic to obovate, 3–7 × 1.6–3 mm, base cuneate to rounded, apex truncate to rounded, not apiculate, surfaces sparsely pubescent abaxially, sparsely pubescent to glabrate adaxially.

stipules not spinescent;

petiole 1.8–3.5 mm, pubescent;

pinnae 2;

petiolules 0.2–0.3 mm, densely pubescent;

rachillas 1.5–12 mm, not winged, with glandular patches on adaxial side, not surrounding leaflet pulvini;

leaflets 2–6(or 8), opposite, blades oblanceolate to obovate, 2–3.5 × 0.8–1.9 mm, base cuneate to attenuate, apex truncate or rounded, apiculate or not, surfaces sparsely pubescent abaxially, sparsely pubescent to glabrate adaxially.

2–10-flowered, axis 1.1–3.5 cm, strigulose to glabrate;

bracts lanceolate, 0.3–0.4 × 0.2–0.3 mm;

bracteoles caducous.

2–10-flowered, axis 0.4–3.5 cm, strigulose to glabrate;

bracts deltate or lanceolate, 0.3–0.5 × 0.2–0.3 mm;

bracteoles persistent or caducous.

10–14 mm, sparsely pubescent or glabrate, joints 1–3 mm from flower, bearded, rarely glabrous, usually nearer flower than pedicel base, rarely nearer pedicel base than flower.

4–11.3 mm, sparsely pubescent or glabrate, joints 2–4.2 mm from flower, bearded, equidistant between flower and pedicel base, distinctly nearer pedicel base, or nearer flower than pedicel base.

calyx lobes sparsely pubescent abaxially, glabrous adaxially;

corolla 8–16 mm diam., petals deep yellow, adaxial one sometimes orange-dotted basally;

ovary glabrate.

calyx lobes moderately pubescent abaxially, glabrous adaxially;

corolla 7.9–16 mm diam., petals light to deep yellow, adaxial one often orange-spotted basally;

ovary sericeous or glabrate.

compressed, not constricted between seeds, 3.8–12 × 1–1.3 cm, glabrescent.

compressed, irregularly and indistinctly torulose, 2.9–5.9 × 0.5–0.8 cm, pubescent, at least basally, or glabrate.

1 or 2(–4).

1–4.

= 28.

= 28.