Flora of North America species comparison

1–many, weakly decumbent to ascending or erect, unbranched to moderately branched, (10–)25–80 cm.

ascending to erect, unbranched or well-branched at base and distally, 15–100 cm.

1–9 × (0.1–)0.3–1 cm, sometimes fascicles of small leaves to 2 cm present in non-flowering axils;

petiole 0–0.6 cm;

blade linear to narrowly lanceolate or oblanceolate, often folded lengthwise, usually not much reduced distally, proximalmost leaves sometimes spatulate, base attenuate, margins subentire or serrulate or spinulose-serrate, apex acute.

in a basal rosette and cauline, basal 3–15 × 0.5–1 cm, blade lyrate;

cauline 1–9 × 0.1–0.8 cm, blade linear to very narrowly elliptic or narrowly lanceolate, margins sinuate-dentate to subentire.

opening at sunrise;

buds with free tips 0–4 mm;

floral tube 5–20 mm;

sepals 4–12 mm, midribs keeled;

petals yellow, fading orangish to purplish, 6–25 mm; antisepalous filaments 2–8 mm, antipetalous filaments 1–4 mm, anthers 2–7 mm, pollen 90–100% fertile;

style 9–30 mm, stigma sometimes blue-black, discoid to quadrangular, exserted beyond anthers.

4-merous, zygomorphic, opening at sunset;

floral tube 6–10 mm;

sepals 6–12 mm;

petals white, fading pink to red, narrowly obovate, 5.5–9.5 mm, short-clawed;

filaments 4–6 mm, anthers 2–3 mm, pollen 90–100% fertile;

style 11–19 mm, stigma surrounded by anthers at anthesis.

10–35 × 1–2 mm, hard, dehiscent 1/2 their length, often tardily dehiscent throughout their length.

ellipsoid or narrowly obovoid, narrowly 4-winged, furrowed between wings, 6–8 × 2–3 mm, narrowed at base, stipe 0 mm;

sessile.

obovoid, 1–1.8 mm, sharply angled, apex truncate.

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

= 14.