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.

several to many, decumbent to ascending, branched, 4–20(–30) 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.

0.6–5 × 0.08–0.6 cm, fascicles of small leaves 0.2–1 cm often present in non-flowering axils;

petiole 0 cm;

blade narrowly lanceolate or narrowly oblanceolate, base attenuate to truncate, sometimes clasping, margins entire or subentire, sometimes revolute, sometimes weakly undulate, apex acute to obtuse.

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

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.

usually 1 per stem opening per day near sunset;

buds with free tips 0.3–3 mm;

floral tube 25–60 mm, funnelform in distal 1/2 or less;

sepals 8–20 mm;

petals yellow, fading pale pink or pale purple, 12–28 mm;

filaments 6–12 mm, anthers 5–11 mm, pollen 85–100% fertile;

style 30–75 mm, stigma yellow, quadrangular, usually exserted beyond anthers.

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.

6–25 × 1–3 mm, hard, promptly dehiscent throughout their length.

1.1–1.8 × 0.5–1 mm.

obovoid, 1.5–2.5 mm.

= 14.

= 14.