Flora of North America species comparison

mesophyllous, 12–27 cm, finely hairy;

stipules caducous;

extrafloral nectary 1, base of or along petiole, sessile or shortly stipitate;

leaflet pairs 5–9, blades elliptic, oblong-elliptic, or lanceolate, 30–60 × 9–24 mm.

usually 5–15-flowered;

bracts caducous.

9–17 mm.

monosymmetric;

calyx pinkish brown;

corolla yellow, longest petal 8–14 mm;

androecium heterantherous, stamens 7, staminodes 3;

anthers of middle stamens 2.6–3.5 mm, of abaxial stamens 4–5 mm, truncate, dehiscing by 2 pores, apical appendage 0;

gynoecium incurved, ovules 20–28;

ovary glabrous or slightly hairy;

style incurved, not dilated.

ascending, flat, curved downward, 65–110 × 7.5–11 mm, corrugated over seeds, tardily dehiscent, each seed compartment wider than long.

dark reddish brown, obovoid or oblong-obovoid.

= 28.