Flora of North America species comparison

erect to decumbent, green or flushed with red on proximal parts or throughout, unbranched or bushy and branched from base, with side branches arising obliquely or arcuately from rosette, 10–60 cm.

usually well-branched, 25–120 cm.

in a basal rosette and cauline, basal 8–30 × 0.5–3 cm, cauline 3.5–20 ×0.5–2.7 cm;

blade grayish green to dull green, very narrowly oblanceolate to narrowly oblanceolate or narrowly elliptic, margins flat, subentire or remotely dentate, teeth sometimes blunt, sometimes sinuate-dentate proximally;

bracts persistent.

in a basal rosette and cauline, basal 7–11 × 0.1–2.3 cm, blade lyrate;

cauline 1–9.5 × 0.1–2.3 cm, blade narrowly lanceolate to linear, margins sinuate-dentate, undulate.

usually recurved with ascending tip distally, rarely suberect, unbranched.

opening near sunset;

buds erect, 3–5 mm diam., with free tips subterminal, spreading to erect, 2.5–4 mm;

floral tube 15–40 mm;

sepals green to yellow, flushed with red and dark red flecked or red-striped, 9–17 mm;

petals yellow to pale yellow, fading yellowish white to pale yellowish orange, very broadly obcordate, 7–20 mm;

filaments 6–15 mm, anthers 3–7 mm, pollen ca. 50% fertile;

style 20–45 mm, stigma surrounded by anthers at anthesis.

4-merous, zygomorphic, opening at sunset;

floral tube 6.5–14 mm;

sepals 11–21 mm;

petals white, fading pink to red or sometimes purple, elliptic-obovate, 10–15 mm;

filaments 6–9 mm, anthers 2–6 mm, pollen 90–100% fertile;

style 16–32 mm, stigma exserted beyond anthers at anthesis.

erect or slightly spreading, usually rusty brown when dry, narrowly lanceoloid to lanceoloid, 15–40 × 4–8 mm, free tips of valves 0.5 mm.

ovoid, narrowly 4-winged, furrowed between angles, 4.5–8 × 2–5 mm, abruptly tapering to stipe 0–1 mm;

sessile.

1.1–1.2 ×0.8–1 mm.

(1 or)2–4(or 5), yellowish to light brown, 2–3 × 1 mm.

= 14.

= 14.