Flora of North America species comparison

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

usually well-branched distal to base, 50–400 cm.

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.

in a basal rosette and cauline, 3–7 × 0.2–0.8 cm;

blade narrowly elliptic to elliptic or lanceolate, margins subentire or shallowly undulate-denticulate.

erect.

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.

4-merous, zygomorphic, opening at sunrise;

floral tube 4–13(–15) mm;

sepals 13–20 mm;

petals white, fading pink, rhombic-obovate, 10–17 mm;

filaments 8–17 mm, anthers 3–7 mm, pollen 90–100% fertile;

style 18–32 mm, stigma exserted beyond anthers at anthesis.

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.

ellipsoid or ovoid, sharply 4-angled, 4.5–7 × 1.5–2.5 mm;

sessile.

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

2–4, yellowish to reddish brown, 1.2–3 × 0.7–1.3 mm.

= 14.

= 14.