Flora of North America species comparison

many, ascending to erect, branched from base, 15–30(–40) cm.

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

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

petiole 0–0.1 cm;

blade linear to narrowly linear-lanceolate, folded lengthwise, base long-attenuate, margins subentire or serrulate, apex acute.

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.

opening near sunrise;

buds with free tips 0–0.5 mm;

floral tube 7 mm;

sepals 4–6 mm, midribs keeled;

petals yellow, fading yellow to orange, 15–20 mm; antisepalous filaments 5 mm, antipetalous filaments 2 mm, anthers 3–4 mm, pollen 90–100% fertile;

style 10 mm, stigma discoid to quadrangular, exserted beyond anthers at anthesis.

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.

18–20 × 2 mm, hard, dehiscent 1/2 their length, often tardily dehiscent throughout their length.

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.

oblanceoloid, 1–1.8 mm, sharply angled, apex truncate.

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

= 14.