Flora of North America species comparison

(when present) ascending, 1–several, usually densely leafy, 0–2 cm.

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

primarily in a basal rosette, (3.4–)6–30(–36) × (0.5–)1.5–5(–7) cm, flexible, sometimes ± fleshy;

petiole (0.2–)2–7(–10) cm;

blade oblanceolate to linear, margins usually irregularly and coarsely pinnately lobed, rarely subentire, apex acute.

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.

1–4 opening per day near sunset;

buds with free tips (1–)2–10(–12) mm;

floral tube (24–)40–200(–265) mm;

sepals (8–)11–40(–42) mm;

petals bright yellow, sometimes paler (in smaller-flowered plants), fading pale orange, drying purple, (7–)10–45(–50) mm;

filaments (5–)8–23(–26) mm, anthers (2–)3–13(–16) mm;

style (40–)50–250(–290) mm, stigma exserted beyond or surrounded by ring of anthers.

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.

leathery in age, surface usually conspicuously reticulate, usually narrowly ovoid or ellipsoid, sometimes ovoid or lanceoloid, winged, wings narrowly oblong, (2–)3–5(–6) mm wide, confined to distal 2/3 of capsule, (10–)20–35(–43) × 4–8 mm (excluding wings), gradually constricted to a short beak, dehiscent 1/4–1/2 their length, valve surface usually conspicuously reticulate;

sessile.

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

asymmetrically cuneiform, 1.8–2.2(–2.6) mm.2n = 14.

obovoid, 2–3 mm.

= 14.