Flora of North America species comparison

slender, unbranched or branched, 10–20 cm.

several, 10–200 cm.

primarily cauline;

petiole 0.3–1.8 cm;

blade unlobed, narrowly ovate to elliptic, 0.3–2 × 0.3–1 cm, margins entire or inconspicuously denticulate, brownish oil cells lining veins abaxially.

in poorly defined basal rosette and cauline;

petiole 1.8–5.5 cm;

blade unlobed, broadly cordate to ovate, 2.4–8 × 7 cm, margins sinuate-dentate, yellowish oil cells prominently lining veins abaxially.

erect, elongating in fruit.

erect, elongating in flower.

opening at sunrise;

buds without free tips;

floral tube 0.4–0.5 mm, glabrous inside;

sepals 1–1.2 mm;

petals yellow, fading pale lavender, 1–1.5 mm;

stamens 4 (or 8), antisepalous, filaments 0.5 mm, anthers 0.5–0.7 mm, glabrous, when 8, then antipetalous ones smaller and abortive;

style 1.5 mm, stigma surrounded by anthers at anthesis.

opening at sunrise;

buds without free tips;

floral tube 4–9 mm, with matted, villous hairs inside;

sepals 4.5–9 mm;

petals pale to dark lavender, diffusely purplish-flecked near base, white at very base, fading darker lavender, 9–14 mm;

stamens unequal, filaments of antisepalous stamens 6–12 mm, of antipetalous ones 3.5–8 mm, anthers 2 mm, glabrous;

style 14–22.5 mm, stigma exserted beyond anthers at anthesis.

spreading or reflexed, clavate, 4–10 mm;

pedicel 3–9 mm.

erect or ascending, clavate, 8–14 mm;

pedicel 2–3.5 mm.

0.8 mm.

1–1.3 mm.

= 14.

= 14.