Flora of North America species comparison

sclerophyllous, modified as phyllodes, 2–9 cm, thinly pubescent or glabrate;

stipules caducous;

extrafloral nectaries (0 or)1 or 2, highly reduced, on rachis, ± sessile;

leaflet pairs (0 or)2–8(–10), often irregularly inserted or absent, blades ovate, apex obtuse or subacute, 2–9 × 1–6 mm.

(2–)4–8-flowered;

bracts caducous.

1 or 2-flowered;

bracts caducous.

8–17 mm.

8–21 mm.

monosymmetric;

calyx pale green, pinkish, or yellowish;

corolla golden yellow, longest petal 9–15 mm;

androecium not heterantherous, stamens 7, staminodes 3;

anthers 2.5–4.2 mm, dehiscing by 1 apical pore, apical appendage 0;

gynoecium linear, slightly incurved, ovules 28–42;

ovary hairy;

style filiform, incurved.

monosymmetric;

calyx yellow;

corolla yellow, longest petal 7.5–13 mm;

androecium not heterantherous, stamens 7, staminodes 3;

anthers 3–4.3 mm, dehiscing by 1 apical pore, apical appendage 0;

gynoecium linear, ovules 6–12;

ovary hairy;

style incurved.

erect, cylindrical, slightly curved, 180–350 × 50–80 mm, shallowly corrugated over seeds, dehiscing apically downward.

erect, flat or turgid, straight, linear, 20–45 × 5–6.5 mm, not or faintly corrugated over seeds, tardily dehiscent.

brown, rhomboid.

dark brown, ovoid.