Flora of North America species comparison

erect, branched or unbranched, 30–300 cm.

1–several, ascending to erect, unbranched to densely branched, 15–70 cm.

in a basal rosette and cauline, basal 3–7 × 0.5–2 cm, sessile, blade oblong to oblong-lanceolate, base usually ± auriculate, margins entire;

cauline 3–8(–10) × 0.4–1.8 cm, blade lanceolate to oblong-lanceolate, gradually smaller, becoming linear-subulate distally.

1–3.5 × 0.1–0.7 cm, fascicles of small leaves 0.2–2.5 cm present in non-flowering axils;

petiole 0 cm;

blade narrowly lanceolate, base acute-attenuate, margins entire or obscurely and sparsely serrulate, not undulate, apex acute.

long, wandlike, unbranched or branched.

4-merous, nearly actinomorphic, opening near sunrise;

floral tube 6–17 mm;

sepals 4–6 mm;

petals white, fading off-white or tinged pink, slightly unequal, rhombic, 4–6 mm, abruptly clawed;

filaments 5–8 mm, anthers 1.5–2 mm, pollen 85–100% fertile;

style 6–10, stigma exserted beyond anthers at anthesis.

usually 1 per stem opening per day at sunset;

buds with free tips 2–9(–12) mm;

floral tube (15–)30–60(–70) mm, funnelform in distal 1/2 or less;

sepals 10–25 mm;

petals yellow, fading pale pink or pale purple, 10–20 mm;

filaments 4–12 mm, anthers 6–10 mm, pollen 85–100% fertile;

style 35–70(–80) mm, stigma yellow, quadrangular, usually exserted beyond anthers.

ovoid, 4-angled, somewhat flattened, 3–4 × 1.5–2.3 mm, valves with raised midrib and conspicuous lateral veins;

sessile.

10–50 × 1.5–4 mm, somewhat papery, promptly dehiscent in distal 1/2.

1, pale yellow, oblanceoloid, 2.4–2.6 × 1–1.5 mm.

obovoid, 2–3 mm.

= 14.

= 14.