Flora of North America species comparison

slender, unbranched or branched from base, 10–60 cm.

with several divergent branches from base, 10–50 cm.

in basal rosette and/or cauline, often purple-dotted, 2–22 × 0.4–3.5 cm;

petiole 0.4–8 cm;

blade pinnately lobed, sometimes lateral lobes greatly reduced or absent and blade reduced to terminal lobe only, terminal lobe oblong or cordate to ovate, 1–5 × 0.5–3.2 cm, margins serrate, brown oil cells prominently lining veins abaxially.

primarily in basal rosette and cauline, 3–20 × 0.7–2.5 cm;

petiole 0.5–4 cm;

blade pinnately or bipinnately lobed, terminal lobe ovate to elliptic, 0.4–2.5 × 0.3–1.5 cm, margins irregularly serrate, dark brown oil cells prominently lining veins abaxially.

erect, elongating after anthesis.

erect, elongating after anthesis.

opening at sunrise;

buds individually reflexed, with apical free tips less than 1 mm;

floral tube 0.5–1.5 mm, glabrous or sparsely villous inside;

sepals 1.5–5 mm;

petals bright yellow, fading pale orange or lavender, 1–6 mm;

stamens unequal, filaments of antisepalous stamens 1–3 mm, those of antipetalous ones 0.3–2 mm, anthers 0.5–2 mm, glabrous or sparsely ciliate;

style 1.5–6 mm, stigma surrounded by anthers at anthesis.

opening at sunrise;

buds individually reflexed, with apical free tips less than 1 mm;

floral tube 1.5–2 mm, glabrous inside;

sepals 2–5 mm;

petals bright yellow, with red dots near base, fading pale lavender, 2–6 mm;

stamens unequal, filaments of antisepalous stamens 1.5–3 mm, those of antipetalous ones 1–2 mm, anthers 1.2–2 mm, glabrous;

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

spreading or ascending, oblong-cylindrical, 11–45 mm;

pedicel 5–30 mm.

spreading to ascending, oblong-cylindrical, 8–20 mm;

pedicel 6–10 mm.

0.6–1.2 mm.

0.6–1 mm.