Flora of North America species comparison

1–5-flowered;

bracts caducous.

5–55-flowered, not spikelike;

bracts early caducous, to 5 mm.

9–16 mm.

13–28 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.

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.

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

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

brown or pinkish brown, paddle-shaped or pyriform.

reddish brown, obovoid to oblong-obovoid.

= 28.