Flora of North America species comparison

1–5-flowered;

bracts caducous.

usually 5–21-flowered;

bracts late caducous.

9–16 mm.

16–25 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.

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.

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

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

brown or pinkish brown, paddle-shaped or pyriform.

dark reddish brown, oblong-ellipsoid.

= 28.