Flora of North America species comparison

erect, usually branched several cm belowground or near base, sometimes also branched distally, 25–100 cm.

5–40 cm.

in a basal rosette and cauline, basal 1–6.5(–13) × 0.4–1.5 cm, blade narrowly oblanceolate;

cauline 0.5–3(–6.5) × 0.1–1.1 cm, blade very narrowly elliptic, narrowly lanceolate, or linear, margins sinuate-dentate to subentire.

1–6 × 0.3–3 cm;

petiole 0.1–1.1 cm;

blade usually lanceolate to oblanceolate, sometimes elliptic, margins weakly serrate to sinuate-pinnatifid.

4-merous, slightly zygomorphic, opening near sunset;

floral tube 3–8.5 mm;

sepals 3–9 mm;

petals white, fading pink to red, slightly unequal, elliptic-obovate, 4–10 mm, clawed;

filaments 2–4.5 mm, anthers 2–4 mm, pollen 85–100% fertile;

style 6.5–15 mm, stigma exserted beyond anthers at anthesis.

1–3 opening per day near sunset;

buds with free tips 0–0.5 mm;

floral tube 5–31 mm;

sepals 10–27 mm;

petals white, fading pink, 8–25 mm;

filaments 6–12 mm, anthers 3–5 mm, pollen 35–65% fertile;

style 12–30 mm, stigma surrounded by anthers at anthesis.

erect, sometimes reflexed in age, fusiform, sometimes slightly narrowed in proximal 1/3, 5.5–13 × 1–2.5 mm, valves with inconspicuous raised midrib;

sessile.

broadly clavate or obovoid, 7–31 ×3–5 mm, winged, wings 0.5–1.5 mm, valve surface with prominent midrib, proximal stipe 3–17 mm;

sessile.

(1 or)2–4, yellowish or light brown, 1.5–2.5 × 0.8–1.3 mm.

narrowly obovoid, 0.9–1.2 × 0.4–0.5 mm.

= 14.

= 14.