Flora of North America species comparison

many-branched from base, leafy, (10–)15–25(–38) cm.

spreading or ascending, unbranched or few-branched distally, 20–80 cm.

cauline, (0.3–)0.6–1.5(–2.5) × (0.05–)0.15–0.4(–0.6) cm, fascicles of small leaves 0.2–0.6 cm often present in non-flowering axils;

petiole 0–0.1 cm;

blade lanceolate to linear, base cuneate, apex acute.

in a basal rosette and cauline, basal 4–8 × 2–5 cm, petiole (0.5–)1–3(–4) cm, blade oblanceolate to ovate, margins entire;

cauline 3–10(–13) × 1–2(–4) cm, petiole 0–0.5(–2) cm, blade lanceolate to ovate, abruptly narrowed to base, margins subentire or coarsely dentate.

erect, flowers in axils of distalmost few nodes.

several opening per day near sunset;

buds usually without free tips, rarely free tips 0.2–0.3 mm;

sepals (7–)8–12 mm;

petals pink, rarely white, streaked or flecked with red, fading bright purple, (8–)10–17 mm;

filaments 6–8 mm, anthers often with red longitudinal stripe, 3–6 mm;

style (16–)22–27 mm, stigma exserted beyond anthers at anthesis.

opening near sunrise;

buds with free tips 1–3 mm, spreading;

floral tube 10–25 mm;

sepals 10–20 mm;

petals bright yellow, fading pale pink or pale yellow, 15–30 mm;

filaments 7–15 mm, anthers 4–8 mm, pollen 85–100% fertile;

style 10–20 mm, stigma exserted beyond anthers at anthesis.

woody, ovoid, narrowly winged, wings 0.8–1.5 mm wide, (7–)9–12(–14) × 2–4 mm (excluding wings), abruptly constricted to a conspicuous, sterile beak, (2–)3–4.5 mm, indehiscent;

sessile.

usually oblong-clavate to oblong-ellipsoid or ellipsoid, 4-angled or weakly 4-winged, (5–)10–15(–28) × 2–4(–5) mm, stipe (1–)3–5(–9) mm;

sessile.

asymmetrically cuneiform or oblanceoloid, 1.2–1.5 × 0.4–0.5 mm.

1 × 0.5 mm.

= 14.

= 56.