Flora of North America species comparison

unbranched or branched from base, 3–30 cm.

virgate with numerous divergent branches, 20–150 cm.

primarily in basal rosette and also cauline;

petiole 0.5–8 cm;

blade usually not pinnately lobed or, if so, then lateral lobes greatly reduced, terminal lobe oblanceolate to cordate, 0.8–7.5 × 0.4–3 cm, margins entire or sparsely denticulate, pale brown oil cells lining veins abaxially.

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.

nodding, elongating after anthesis.

erect to nodding, elongating in bud.

opening at sunrise;

buds without subapical free tips;

floral tube 2–4.5 mm, villous inside proximally;

sepals 3–8 mm;

petals bright yellow, with red dots near base, fading pale yellow or yellowish orange, 5.5–9 mm;

stamens unequal, filaments of antisepalous stamens 3–8 mm, those of antipetalous ones 2.8–5.5 mm, anthers 2–4 mm, ciliate;

style 10–17 mm, stigma exserted beyond anthers at 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.

erect, spreading, or slightly reflexed, clavate, 18–40 mm;

pedicel 4–28 mm.

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

pedicel 7–20 mm.

1.2–1.7 mm.

1–1.3 mm.

= 14.

= 14.