Flora of North America species comparison

erect or ascending, unbranched or branched, 30–60 cm.

erect to ascending, green or red, unbranched or with branches obliquely arising from rosette or in distal 1/2 of main stem.

in a basal rosette and cauline, rosette weakly developed or absent, at least during flowering, 3–9 × (0.6–)1–2.5 cm;

petiole 0–2 cm;

blade oblong to lanceolate or narrowly ovate, margins irregularly sinuate-dentate.

in a basal rosette and cauline, basal 7–25 × 0.7–2 cm, cauline 6–13 × 0.4–1 cm;

blade dark green, somewhat glossy, very narrowly oblanceolate to narrowly oblanceolate, linear-elliptic, lanceolate, or nearly linear, margins flat, entire or remotely and bluntly dentate, sometimes with larger teeth near base;

bracts persistent.

curved with ascending tip, unbranched.

1–several opening per day near sunset;

buds nodding, weakly quadrangular, with free tips 0.5–4 mm;

floral tube 30–50 mm;

sepals 20–30 mm, not spotted;

petals white, fading pink, broadly obovate, 20–30 mm;

filaments 10–15 mm, anthers 8–15 mm;

style 50–70 mm, stigma exserted beyond anthers at anthesis.

opening near sunset;

buds erect, 4–8 mm diam., with free tips subterminal, divergent and hornlike, 3–9 mm;

floral tube 32–52 mm;

sepals yellowish green to yellow, sometimes flushed with red, especially at apex, 27–38 mm;

petals yellow to pale yellow, fading pale yellow to pale yellowish orange, very broadly obcordate or obovate, 25–42 mm;

filaments 20–27 mm, anthers 9–13 mm, pollen 90–100% fertile;

style 60–85 mm, stigma exserted beyond anthers at anthesis.

erect or strongly ascending, not woody, straight or slightly curved, subcylindrical, obtusely 4-angled, tapering gradually from base to apex, 20–30 × 2–3 mm;

sessile.

spreading at nearly a right angle to stem, curved upward, sometimes secund, dull green or rusty brown when dry, narrowly lanceoloid to lanceoloid, 20–40 × 4–6 mm, free tips of valves 1–2 mm.

numerous, in 1 row per locule, dark brown, narrowly obovoid, 1.5 mm.

1.3–1.9 × 0.7–1.1 mm.

= 14.

= 14.