Flora of North America species comparison

(2–)4–8-flowered;

bracts caducous.

usually 3–15-flowered;

bracts caducous.

8–17 mm.

12–26 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 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, cylindrical, slightly curved, 180–350 × 50–80 mm, shallowly corrugated over seeds, dehiscing apically downward.

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

brown, rhomboid.

brown or dark reddish brown, obovoid.

= 24.