Flora of North America species comparison

erect, green or red on proximal parts or throughout, mostly branched from base or only in distal 1/2, 30–150 cm.

ascending, unbranched to few-branched, 30–65 cm.

in a basal rosette and cauline, basal 10–30 × 1–4 cm, cauline 4–18 × 1–3 cm;

blade usually bright green, sometimes pale green distally, white- or red-veined, narrowly oblanceolate, narrowly elliptic to lanceolate, or oblong, margins usually flat, rarely undulate, regularly dentate to remotely denticulate, sometimes teeth widely spaced;

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.

erect or ± curved, unbranched or with secondary branches just proximal to main one.

nodding, flowers in axils of distalmost few nodes.

opening near sunset;

buds erect, 3–5 mm diam., with free tips subterminal, spreading to erect, 0.5–5 mm;

floral tube 22–40 mm;

sepals green to yellowish green or flushed with red or dark red, sometimes only red-flecked, 7–17 mm;

petals yellow to pale yellow, fading pale yellow to pale yellowish orange, very broadly obcordate, 8–15(–20) mm;

filaments 7–13 mm, anthers 3.5–6 mm, pollen ca. 50% fertile;

style 25–50 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 greenish black when dry, narrowly lanceoloid to lanceoloid, 20–40 ×3.5–5 mm, free tips of valves 1–1.5 mm.

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

sessile.

1.1–1.8 × 0.5–1 mm.

1 × 0.5 mm.

= 14.

= 56.