Flora of North America species comparison

many, ascending to erect, branched from base, 15–30(–40) cm.

erect, usually flushed with red proximally or sometimes green, unbranched or with branches obliquely arising from base, secondary branches arising from main stem, 60–300 cm.

2.5–3.5 × 0.1–0.2 cm, rarely fascicles of small leaves present in non-flowering axils;

petiole 0–0.1 cm;

blade linear to narrowly linear-lanceolate, folded lengthwise, base long-attenuate, margins subentire or serrulate, apex acute.

in a basal rosette and cauline, basal 9–40 × 1.4–5 cm, cauline 5–22 × 0.8–2.5 cm;

blade dull green, flat, narrowly oblanceolate, oblanceolate to narrowly elliptic, or narrowly lanceolate, margins bluntly dentate or subentire, teeth widely spaced;

bracts persistent.

open, erect, unbranched.

opening near sunrise;

buds with free tips 0–0.5 mm;

floral tube 7 mm;

sepals 4–6 mm, midribs keeled;

petals yellow, fading yellow to orange, 15–20 mm; antisepalous filaments 5 mm, antipetalous filaments 2 mm, anthers 3–4 mm, pollen 90–100% fertile;

style 10 mm, stigma discoid to quadrangular, exserted beyond anthers at anthesis.

opening near sunset;

buds erect, 5–9 mm diam., with free tips terminal, erect, 2–6 mm;

floral tube deciduous after anthesis, 60–135 mm;

sepals yellowish green, flushed with some red or red to dark red throughout, 25–55 mm;

petals yellow to pale yellow, fading orange or pale yellow, very broadly obcordate, 28–65 mm;

filaments 20–40 mm, anthers 14–20 mm, pollen 90–100% fertile;

style 90–180 mm, stigma exserted beyond anthers at anthesis.

18–20 × 2 mm, hard, dehiscent 1/2 their length, often tardily dehiscent throughout their length.

erect or slightly spreading, dull green or gray-green when dry, narrowly lanceoloid, 25–55 × 4–9 mm, free tips of valves 1–2(–3) mm.

oblanceoloid, 1–1.8 mm, sharply angled, apex truncate.

1–1.9 × 0.6–1.2 mm.

= 14.

= 14.