Flora of North America species comparison

ascending, branched below or just above ground, branched also proximal to inflorescences, 30–70(–120) cm.

erect, branched below and just above ground, branched also proximal to inflorescences, 40–120(–250) cm.

in a basal rosette and cauline, basal 3–17 × 0.8–2 cm, blade oblanceolate, cauline 1–6.5 × 0.1–1.5 cm, sessile, blade narrowly oblanceolate to elliptic, margins conspicuously sinuate-dentate, often undulate.

in a basal rosette and cauline, (1–)3–11 × (0.1–)0.5–2 cm, blade linear to narrowly oblanceolate, margins usually sparsely sinuate-dentate, rarely subentire, often undulate.

slender.

stout.

4-merous, zygomorphic, opening near sunset;

floral tube 2–3.5 mm;

sepals 6–12 mm;

petals white, fading dark pink to red, slightly unequal, elliptic-obovate, 7–11 mm, long-clawed;

stamens presented in lower 1/2 of flower, filaments 5–9 mm, lanate at very base, anthers 2–4 mm, pollen 90–100% fertile;

style 9–16 mm, stigma exserted beyond anthers at anthesis.

4-merous, zygomorphic, opening near sunset;

floral tube 2.5–5 mm;

sepals 7–14 mm;

petals white, fading pink to red, slightly unequal, elliptic, 7–15 mm;

stamens presented in lower 1/2 of flower, filaments 5–11 mm, lanate at very base, anthers 3–5 mm, pollen 90–100% fertile;

style 12–19 mm, stigma exserted beyond anthers at anthesis.

reflexed, lanceoloid to narrowly ovoid, narrowly 4-winged, 8–19 × 1.5–2 mm, tapering to a sterile stipe 3–9 mm.

narrowly ovoid, narrowly 4-winged or 4-angled, 8–15 × 1.5–3.5 mm, abruptly constricted to a long, sterile stipe 2–8 mm.

(1 or)2–4, 2–3 × 1 mm, yellowish to reddish brown.

(1 or)2–4, light to reddish brown, 2–3 × 1–1.5 mm.

= 14.

= 28.