Flora of North America species comparison

mesophyllous, 5.5–9.5 cm, glabrous or glabrate;

stipules caducous;

extrafloral nectary 1, between first leaflet pair, sessile or short-stipitate;

leaflet pairs 3, blades oblong-lanceolate, 25–60 × 5–14 mm.

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.

4–18-flowered;

bracts caducous.

1 or 2-flowered;

bracts caducous.

13–23 mm.

8–21 mm.

monosymmetric;

calyx brownish to greenish yellow;

corolla golden yellow, longest petal 8–16 mm;

androecium heterantherous, stamens 7, middle stamens 1/2 as long as abaxial or smaller, staminodes 3;

anthers of middle stamens to 3.6–4.8 mm, of abaxial stamens 5.2–6.5 mm, dehiscing by nearly U-shaped pore, apical appendage inconspicuous;

gynoecium incurved, ovules 34–50;

ovary hairy;

style slightly 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.

somewhat pendulous, cylindrical, straight, 40–120 × 6–10 mm, corrugated over seeds, indehiscent.

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

dull brown or dark reddish brown, obliquely obovoid or oblong-ellipsoid.

dark brown, ovoid.

= 28.