Flora of North America species comparison

(when present) ascending, (1–)several–10, densely leafy, 1–2 cm.

many from base, ascending or erect, usually branched, 50–150 cm.

primarily in a basal rosette, 7–14(–18) × (0.3–)0.5–1(–1.5) cm, moderately thick and stiff;

petiole (1.2–)3–5 cm;

blade linear to very narrowly elliptic, margins irregularly and coarsely dentate or pinnately lobed, apex long-attenuate.

in a basal rosette and cauline, 0.5–9 × 0.

1–3 opening per day near sunset;

buds with unequal free tips 1–3 mm;

floral tube (53–)60–100 mm;

sepals 26–50 mm;

petals bright yellow, fading deep reddish orange, drying purplish brown, 28–50 mm;

filaments 21–35 mm, anthers 9–11 mm;

style 75–143 mm, stigma exserted beyond anthers.

4-merous, zygomorphic, opening at sunrise;

floral tube 4–9 mm;

sepals 9–17 mm;

petals white, fading light or deep pink, rhombic-obovate to elliptic, 10–15 mm;

filaments 7–12 mm, anthers 3.5–4.5 mm, pollen 90–100% fertile;

style 16–27 mm, stigma exserted beyond anthers at anthesis.

leathery in age, oblong-oblanceoloid, narrowly winged, wings oblong, 1–2(–4) mm wide, broadest near apex, 14–18(–22) × 7–8 mm (excluding wings), apex abruptly constricted, dehiscent 1/4–1/3 their length, valve surface with inconspicuous veins;

sessile.

ellipsoid or ovoid, 4-angled, 6–9 × 2–3.5 mm;

sessile.

asymmetrically cuneiform, 2–2.5 mm.

1–4, yellowish to light brown, 2–3 × 1–1.5 mm.

–1.3 cm;

blade narrowly elliptic to narrowly oblanceolate, margins coarsely and remotely serrate.

= 14.

= 14.