Flora of North America species comparison

1–5-flowered;

bracts caducous.

usually 3–15-flowered;

bracts caducous.

9–16 mm.

12–26 mm.

monosymmetric;

calyx caducous, pale green;

corolla yellow or orange-yellow, longest petal 12–17 mm;

androecium not heterantherous, stamens 7, staminodes 3;

anthers 2.2–3.3 mm, dehiscing by 1 apical pore, apical appendage 0;

gynoecium nearly linear, ovules 22–40;

ovary densely hairy;

style slightly incurved.

monosymmetric;

calyx yellow;

corolla deep yellow, longest petal 12–19 mm;

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

anthers of middle stamens 3.7–5 mm, of abaxial stamens 6–7.5 mm, dehiscing by 2 pores, apical appendage inconspicuous;

gynoecium incurved, ovules 30–50;

ovary densely hairy;

style slightly incurved.

erect, subcylindrical, straight or slightly curved, 20–35 × 4.5–6.5 mm, corrugated over seeds, dehiscing apically downward.

somewhat pendulous, cylindrical, 70–135 × 7–10 mm, slightly corrugated over seeds, indehiscent.

brown or pinkish brown, paddle-shaped or pyriform.

brown or dark reddish brown, obovoid.

= 28.

= 24.