Flora of North America species comparison

virgate with numerous divergent branches, 20–150 cm.

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

primarily in well-developed basal rosette, cauline reduced or absent, 6–30 × 1.4–6.5 cm;

petiole 0.3–6 cm;

blade pinnately or bipinnately lobed, terminal lobe ovate to elliptic, 2.5–6.5 × 1.5–3 cm, margins irregularly serrate, dark 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 to nodding, elongating in bud.

erect, elongating after anthesis.

opening at sunrise;

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

floral tube 1–3 mm, glabrous or villous inside proximally;

sepals 3–8 mm;

petals usually bright yellow, rarely cream, fading yellow to lavender, 4–9 mm;

stamens unequal, filaments of antisepalous stamens 2.5–4 mm, those of antipetalous ones 1.3–3 mm, anthers 2–4 mm, ciliate;

style 7–11 mm, stigma exserted beyond 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.

usually spreading, rarely slightly reflexed, oblong-cylindrical, 10–52 mm;

pedicel 7–20 mm.

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

pedicel 6–10 mm.

1–1.3 mm.

0.6–1 mm.

= 14.