Flora of North America species comparison

erect, incurved ascending.

erect, not or weakly branched.

(1.5–)2–8(–9)[15–21] cm;

petiole (1.5–)2–7 mm;

extrafloral nectary 1(or 2), near mid petiole, stipitate;

leaflets (6–)8–28(–32)[–40] pairs, blades usually straight, sometimes falcate, linear, narrowly oblong, or oblong-elliptic, (3–)4–26 × 1–3 mm.

3–8.5 cm;

petiole 3–7 mm;

extrafloral nectary 1, subsessile or shortly stipitate;

leaflets 8–18(–20) pairs, blades lanceolate- or linear-oblong, 9–20 × 2–3.3 mm.

1(or 2)-flowered, axillary.

1–4-flowered, supra-axillary.

0.5–4[–16] mm;

bracteoles mid pedicel.

(6–)8–22(–26) mm;

bracteoles distal to mid pedicel.

calyx greenish, sepal venation reticulate;

corolla yellow, sometimes fading pinkish, petals to 3.5–8(–9)[–16] mm;

stamens [2–]4–8[or 9];

anthers yellow-orange or red, to (1.4–)1.6–3[–9.5] mm, different sizes;

ovary usually hairy throughout, rarely glabrate.

calyx greenish, sepal venation reticulate;

corolla rich yellow, petals all or some reddish spotted at claw, to (6–)8–22(–26) mm;

stamens 10;

anthers all or some yellow, dull reddish, or both, to 8–10.5 mm;

ovary often hairy, sometimes glabrous.

straight, linear-oblong, [14–](15–)18–48(–56)[–78] × [2.4–]2.5–5.5(–5.8) mm.

straight or slightly curved, linear, 35–75(–85) × 4.5–6 mm.

[1.9–](2.2–)2.4–3.4[–3.7] mm.

(2.8–)3.2–4.8 mm.