Flora of North America species comparison

slender, unbranched or branched, 10–20 cm.

several, 10–100 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.

primarily in poorly defined basal rosette, cauline greatly reduced when present;

petiole 0.4–8 cm;

blade unlobed, ovate to cordate, 2–11.5 × 1.4–5 cm, margins sinuate-dentate, brown oil cells prominently lining veins abaxially.

erect, elongating in fruit.

erect, elongating in anthesis.

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 2–5 mm, villous inside;

sepals 1.5–3.5 mm;

petals lavender, paler and often with flecks toward base, often yellow at very base, fading darker lavender, 2–6 mm;

stamens unequal, filaments of antisepalous ones 1.8–3 mm, of antipetalous ones 1–2.5 mm, anthers 0.6–1 mm, glabrous or sparsely ciliate;

style 4–7 mm, stigma surrounded by anthers at anthesis.

spreading or reflexed, clavate, 4–10 mm;

pedicel 3–9 mm.

erect, clavate, 7–13 mm;

pedicel 2–5 mm.

0.8 mm.

1–1.2 mm.

= 14.

= 14.