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.

ascending, unbranched to few-branched, 30–65 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 2.5–7 ×0.7–2.3 cm, petiole 1–1.5 cm, blade oblanceolate, margins subentire, undulate;

cauline (3–)6–7(–9) ×(0.3–)0.6–0.8(–1.1) cm, sessile, blade lanceolate to narrowly lanceolate, margins subentire.

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

nodding, flowers in axils of distalmost few nodes.

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.

opening near sunrise;

buds with free tips 1–2 mm, connivent to spreading;

floral tube 10–15(–20) mm;

sepals 10–18 mm;

petals bright yellow, fading pale pink, 15–25 mm;

filaments 7–9 mm, anthers 5–8 mm, pollen 85–100% fertile;

style 10–12 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.

ellipsoid, 4-angled, 8–10 × 3–4 mm, stipe 0–2 mm;

sessile.

1.1–1.2 ×0.8–1 mm.

1 × 0.5 mm.

= 14.

= 56.