Flora of North America species comparison

erect, unbranched or many-branched distally, (20–)30–200(–300) cm.

moderately leafy, (1–)4–40(–60) cm.

in a basal rosette and cauline, basal 4–15 × 1.5–3 cm, petiole 0–1.8 cm, blade broadly oblanceolate, margins sinuate-dentate to dentate;

cauline 2–13 × 0.5–5 cm, petiole 0–2 cm, blade narrowly elliptic to narrowly ovate, margins sinuate-dentate to dentate.

cauline, (2.8–)3.7–12.5(–17) × (0.1–)0.4–3(–4.5) cm;

petiole (0.4–)1–4(–6) cm;

blade linear, lanceolate-elliptic, elliptic to oblanceolate or suborbiculate, margins entire or conspicuously or inconspicuously denticulate or serrulate, sometimes undulate, apex usually acute, sometimes obtuse or retuse (subsp. incana).

relatively long, dense.

4-merous, nearly actinomorphic, opening near sunset;

floral tube 1.5–5 mm;

sepals 2–3.5 mm;

petals white, fading pale to dark pink, slightly unequal, oblong-obovate to elliptic-oblanceolate, 1.5–3 mm, abruptly clawed;

filaments 1.5–3 mm, anthers 0.5–1 mm, pollen 85–100% fertile;

style 3–9 mm, stigma surrounded by anthers at anthesis.

usually 1 or 2, rarely more, opening per day near sunset, fading next morning, sometimes (subspp.

fusiform, terete, weakly angled in distal 1/3, angles becoming broad and rounded in proximal part, 5–11 × 1.5–3 mm, tapering abruptly toward base;

sessile.

papery in age, narrowly ellipsoid to lanceoloid, sometimes twisted (subsp. fremontii), winged, wings (2–)10–28(–34) mm wide, body (13–)25–70(–115) × 2–9 mm, dehiscent 1/4–1/3 their length;

pedicel 1–12(–25) mm.

3 or 4, reddish brown, 2–3 × 1–1.5 mm.

numerous, rarely as few as 8, in 1 row per locule, obovoid, (2–)3–5 × 1–2.3 mm.

and oklahomensis) lasting for 2 days, weakly scented;

buds with unequal free tips 1–11(–15) mm;

floral tube (21–)35–140(–160) mm;

sepals (20–)25–65(–75) mm;

petals bright yellow, fading orange, reddish orange or mostly unchanged, obovate to very broadly obovate, (17–)25–65(–68) mm, usually with terminal notch and/or tooth, margin sometimes erose;

filaments 13–40(–44) mm, anthers 10–24(–25) mm;

style (45–)55–192 mm, stigma usually exserted beyond anthers at anthesis.

= 14.