Flora of North America species comparison

erect, unbranched or many-branched distally, (20–)30–200(–300) cm.

1–several, ascending to decumbent, 7–65 cm.

in a basal rosette and cauline, basal 4–15 × 1.5–3 cm, petiole 0–1.8 cm, blade broadly oblanceolate, margins sinuate-dentate to dentate;

cauline 2–13 × 0.5–5 cm, petiole 0–2 cm, blade narrowly elliptic to narrowly ovate, margins sinuate-dentate to dentate.

in a basal rosette and cauline, basal 1–6 × 0.3–2 cm, blade narrowly elliptic to elliptic or ovate, margins subentire, weakly serrulate, or sinuate-pinnatifid;

cauline 1–6 × 0.3–2 cm, blade narrowly elliptic to narrowly ovate, margins subentire or weakly serrulate, proximal ones sinuate-pinnatifid.

relatively long, dense.

erect.

4-merous, nearly actinomorphic, opening near sunset;

floral tube 1.5–5 mm;

sepals 2–3.5 mm;

petals white, fading pale to dark pink, slightly unequal, oblong-obovate to elliptic-oblanceolate, 1.5–3 mm, abruptly clawed;

filaments 1.5–3 mm, anthers 0.5–1 mm, pollen 85–100% fertile;

style 3–9 mm, stigma surrounded by anthers at anthesis.

1–3 opening per day near sunrise;

buds with free tips 0.1–1 mm;

floral tube 4–8 mm;

sepals 6–12 mm;

petals rose purple, fading darker, 4–12 mm;

filaments 4–6 mm, anthers 2–3.5 mm, pollen 35–65% fertile;

style 7–13.5 mm, stigma surrounded by anthers at anthesis.

fusiform, terete, weakly angled in distal 1/3, angles becoming broad and rounded in proximal part, 5–11 × 1.5–3 mm, tapering abruptly toward base;

sessile.

narrowly obovoid, 4–12 × 2–4 mm, apex attenuate to a sterile beak, proximal stipe 5–20 mm, gradually tapering to base, valve midrib prominent in distal part;

sessile.

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

narrowly obovoid, 0.5–0.9 × 0.3–0.5 mm.

= 14.

= 14.