Flora of North America species comparison

1–several, ascending, 5–60 cm.

erect, branched below and just above ground, branched also proximal to inflorescences, 60–250(–300) cm.

in a basal rosette and cauline, basal 2–7 × 0.3–1.4 cm, blade narrowly elliptic to narrowly ovate, margins weakly serrulate to sinuate-pinnatifid;

cauline 1.2–6 × 0.3–1 cm, blade narrowly elliptic to elliptic or ovate, proximal ones sinuate-pinnatifid, margins subentire or weakly serrulate.

in a basal rosette and cauline, (1–)3–9 × (0.1–)0.5–1.3 cm, blade linear or narrowly lanceolate to narrowly oblanceolate, margins slightly to coarsely sinuate-dentate.

erect.

slender, often well-branched, buds small and well-spaced.

1–3 opening per day near sunrise;

buds with free tips 0–0.1 mm;

floral tube 9–14 mm;

sepals 7.5–13 mm;

petals rose purple, fading darker, 8–15 mm;

filaments 4–9 mm, anthers 2.5–4 mm, pollen 85–100% fertile;

style 12–19 mm, stigma surrounded by anthers at anthesis.

4-merous, zygomorphic, opening near sunset;

floral tube 2.5–6 mm;

sepals 5–12.5 mm;

petals white, fading pink to red, slightly unequal, elliptic, 5–10 mm, clawed;

stamens presented evenly around flower parts, filaments 3–8.5 mm, anthers 1.4–4 mm, pollen 90–100% fertile;

style 8.5–19 mm, stigma exserted beyond anthers at anthesis.

clavate or narrowly obovoid, 9–14 × 3–4 mm, apex attenuate to a sterile beak, valve midrib prominent in distal part, proximal stipe 4–15 mm, gradually tapering to base;

sessile.

ovoid, narrowly 4-winged or 4-angled, 5–10 × 1.5–2 mm, abruptly constricted to a sterile stipe 0.5–4.5 mm.

narrowly obovoid, 0.7–0.9 × 0.3–0.5 mm.

1 or 2, yellowish to reddish brown, 1.5–3.5 × 1–1.5 mm.

= 14.

= 14.