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.

erect to ascending, often with ascending lateral branches, 15–60(–100) 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 5–13 × 1–3 cm, cauline 3–10 × 1.5–3.5 cm;

blade green, narrowly oblanceolate to narrowly elliptic, margins lobed or dentate, lobes often dentate;

bracts spreading, flat.

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.

1–few opening per day near sunset;

buds erect, with free tips terminal, erect or hornlike, 1.5–5 mm;

floral tube 25–45 mm;

sepals 15–30 mm;

petals yellow, very broadly obovate or shallowly obcordate, 25–40 mm;

filaments 12–22 mm, anthers 4–11 mm, pollen 85–100% fertile;

style 40–75 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.

cylindrical, sometimes slightly enlarged toward apex, 25–50 ×2–3 mm.

1.1–1.2 ×0.8–1 mm.

broadly ellipsoid to subglobose, 0.8–1.5 × 0.5–0.9 mm.

= 14.

= 14.