Flora of North America species comparison

5–55-flowered, not spikelike;

bracts early caducous, to 5 mm.

usually 5–21-flowered;

bracts late caducous.

13–28 mm.

16–25 mm.

asymmetric, enantiostylous;

calyx greenish to yellow;

corolla yellow-orange, slightly dark-veined, longest petal 12–23 mm, highly asymmetric, 1 or both lower petals highly modified, strongly concave and folded over stamens (flag-shaped);

androecium slightly heterantherous, stamens 7 (similar in shape and size, abaxial ones slightly longer), staminodes 3;

anthers 2.8–5 mm, dehiscing by 2 short slits, apical appendage 0;

gynoecium incurved, ovules 46–70;

ovary glabrate, sometimes becoming hairy after fertilization;

style stout.

slightly asymmetric;

calyx greenish;

corolla pale yellow, longest petal 16–24 mm;

androecium heterantherous, stamens 10, staminodes 0;

anthers of 9 short stamens 4–5.2 mm, of 1 long stamen 4.5–6.5 mm, dehiscing by 2 pores, apical appendage 0;

gynoecium slightly incurved, ovules 18–30;

ovary slightly hairy;

style slightly incurved.

pendulous, flat, straight, 220–370 × 80–140 mm, woody, indehiscent or splitting transversely into woody segments.

somewhat pendulous, flat, slightly curved, 70–100 × 11–15 mm, slightly corrugated over seeds, indehiscent.

reddish brown, obovoid to oblong-obovoid.

dark reddish brown, oblong-ellipsoid.