Flora of North America species comparison

mesophyllous, 11–26 cm, glabrous or glabrate;

stipules caducous;

extrafloral nectary 1, base of petiole, sessile or subsessile;

leaflet pairs 4 or 5(or 6), blades lanceolate- or ovate-acuminate, 45–100 × 12–38 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.

usually (1 or)2–5-flowered;

bracts caducous, longer than bud, often blackish green.

1 or 2-flowered;

bracts caducous.

8–21 mm.

8–21 mm.

monosymmetric;

calyx pinkish or fuscous;

corolla yellow, longest petal 12–17 mm;

androecium heterantherous, stamens 6, staminodes 3 + 1;

anthers of middle stamens 3.2–5.2 mm, of abaxial stamens 4.9–6.6 mm, elongated beyond pores, dehiscing by U-shaped pore, apical appendage linguiform, thickened;

gynoecium incurved, ovules 40–60;

ovary densely 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.

ascending, flat, slightly curved or straight, linear, 80–135 × 6.5–9.5 mm, corrugated over seeds, dehiscent.

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

olive green or brownish, obovoid.

dark brown, ovoid.

= 26, 28.