Flora of North America species comparison

erect to ascending, often with ascending lateral branches, 15–60(–100) cm.

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.

in a basal rosette, 2.6–4.2(–6.2) × 1.4–4.2 cm;

petiole 2.5–9(–11.5) cm;

blade usually oblanceolate to obovate, sometimes suborbiculate, margins dentate, pinnately lobed, lateral lobes oblong to lanceolate, often absent or reduced to only a few lobes toward terminal lobe, base rounded to cordate.

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.

usually 1–3, rarely more, opening per day near sunset;

buds erect, quadrangular, without free tips;

floral tube 27–45(–55) mm;

sepals 25–30 mm;

petals intensely yellow, fading deep salmon red, obcordate, 25–38 mm;

filaments 17–23 mm, anthers 7–10 mm;

style 44–65(–80) mm, stigma somewhat exserted beyond anthers at anthesis.

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

moderately thin and flexible, lanceoloid, falcate or sigmoid, often contorted and twisted, 4-angled, 35–90 × 7–11 mm, gradually tapering to a long, slender, sterile apex, 10–30(–40) mm, valves conspicuously wrinkled, dehiscent 2/3–3/4 their length;

sessile.

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

numerous, in 1 row per locule, often forming 2 rows near base of capsule, obovoid, 2.4–3.2 × 1.3–1.7 mm, surface coarsely rugose.

= 14.

= 14.