Flora of North America species comparison

(2–)4–8-flowered;

bracts caducous.

40+-flowered, spikelike, bearing flowers in conelike head, often apparently terminal;

bracts conspicuous, covering buds, caducous as pedicel elongates, firm, yellow to light orange, 10+ mm.

8–17 mm.

4–11 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.

asymmetric (enantiostylous);

calyx yellow;

corolla bright yellow to yellow-orange, bowl-shaped, petals monosymmetric, lower and upper petals similar in shape, firm, strongly concave, longest petal 15–24 mm;

androecium heterantherous, stamens 7, staminodes 3;

anthers of middle stamens 2.6–4 mm, of abaxial stamens 9.5–13 mm, dehiscing by 1 or 2 short slits, apical appendage 0;

gynoecium incurved, ovules 44–58;

ovary densely hairy;

style incurved.

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

ascending, flat, straight or slightly curved, tetragonal, 110–190 × 9–12 mm, carinate by sutures and winged along middle of each valve, tardily dehiscent.

brown, rhomboid.

dark brown, rhomboid.

= 24.