Flora of North America species comparison

(if present), usually unbranched, rarely with 1–several short laterals, 4–8 cm.

(when present), usually ascending or decumbent, unbranched or branched from near base, 0–40 cm.

(6.8–)9.5–23(–32) × (1.3–)2.4–4.5(–6.5) cm;

petiole (3–)4–11(–14) cm;

blade oblanceolate to spatulate, margins often undulate, usually regularly to irregularly dentate, rarely coarsely and irregularly pinnately lobed.

1.7–26(–36) × (0.3–)0.5–4.5(–6.5) cm;

petiole (0.2–)1.7–11(–14) cm;

blade usually oblanceolate to rhombic or spatulate, rarely elliptic, obovate, lanceolate, or linear-oblanceolate, margins irregularly sinuate-dentate, serrate, pinnatifid, lobed, or subentire, apex usually acute to rounded, rarely acuminate.

floral tube (45–)75–110(–153) mm;

sepals (22–)30–45(–50) mm;

petals fading pink to pale rose, (21–)35–43(–50) mm;

filaments (16–)19–28(–35) mm, anthers (10–)12–17 mm;

style 85–180 mm.

1–4(–6) per stem opening per day near sunset, with moderate to strong sweet scent with a rubbery background scent;

buds usually erect, rarely recurved (during early development);

floral tube (20–)40–140(–165) mm;

sepals (15–)18–45(–54) mm;

petals white, fading rose or rose pink to dark or deep rose purple, or pink to pale or light rose, or lavender, obovate or obcordate, (16–)20–50(–60) mm;

filaments (6–)10–30(–35) mm, anthers (6–)9–17(–20) mm;

style (45–)60–180(–185) mm, stigma exserted beyond anthers at anthesis.

somewhat curved, lanceoloid-cylindrical to cylindrical, symmetrical throughout, sometimes slightly flattened on one side at base, (17–)25–45(–56) × 5–8 mm, valve margins with conspicuous, nearly smooth to irregular undulate ridge;

pedicel 2–7 mm.

straight, curved, falcate, or sigmoid, usually cylindrical to lanceoloid or ellipsoid, sometimes ovoid, usually obtusely 4-angled, (10–)13–50(–68) × 4–9 mm, tapering to a sterile beak 6–8 mm, valve margins with rows of distinct tubercles to sinuate or nearly smooth ridges, dehiscent 1/3–7/8 their length;

pedicel (0–)1–40(–55) mm.

narrowly obovoid, 2.5–3 × 1–1.4 mm, embryo 1/2 of seed volume, surface minutely papillose to reticulate;

seed collar forming narrow slit above raphe with a slightly sunken membrane, margin entire or obscurely sinuate distally.

numerous in 1 or 2 rows per locule, usually obovoid, oblong, or triangular, rarely suborbicular, 2.1–3.9 × 1–2.6 mm, embryo 1/5–2/3 of seed volume, surface papillose, reticulate or rarely irregularly roughened;

seed collar sealed by a thin membrane, this flat or depressed into raphial cavity, when depressed often splitting, becoming separated from seed collar.

= 14, 28.

= 14, 28.