Flora of North America species comparison

several, 8–50 cm.

ascending to erect, usually branched.

primarily in basal rosette and also cauline, 1.5–20 × 0.5–3 cm;

petiole 0.5–5 cm;

blade pinnately lobed, terminal lobe ovate to narrowly ovate, 1.3–6 × 0.6–3 cm, margins denticulate, brownish oil cells lining veins abaxially.

basal and cauline, cauline often reduced, basal often forming well-developed rosette, alternate;

stipules absent; long-petiolate;

blade often pinnately (rarely bipinnately) lobed, sometimes unlobed, or lateral lobes greatly reduced or absent, terminal lobe usually large, margins usually regularly or irregularly dentate to serrate, sometimes denticulate, serrulate, or entire, abaxial surface or margin with ± conspicuous, usually brown, oil cells.

nodding, not congested, elongating in mature bud.

racemes, erect or nodding.

opening at sunrise;

buds with or without subapical free tips;

floral tube orange-brown inside, 2–3 mm, villous inside;

sepals 4–7 mm;

petals bright yellow, with red dots near base, fading pale yellow or yellowish orange, 3–10 mm;

stamens subequal, filaments 4–8 mm, anthers 3–6 mm, ciliate;

style 8–18 mm, stigma exserted beyond anthers at anthesis.

bisexual, actinomorphic, buds usually erect, sometimes reflexed;

floral tube deciduous (with sepals, petals, and stamens after anthesis), with basal nectary;

sepals 4, reflexed singly;

petals 4, usually yellow or white, often fading orange-red, sometimes lavender or purple, rarely cream, often with 1+ red dots near base;

stamens usually 8, in 2 subequal series, rarely 4 in 1 series (usually in C. exilis), anthers versatile, pollen shed singly or in tetrads;

ovary 4-locular, stigma usually entire and capitate, rarely conical-peltate and ± 4-lobed, surface unknown, probably wet and non-papillate.

a capsule, straight or slightly curved, subterete and clavate or oblong-cylindrical, regularly loculicidal;

pedicellate.

widely spreading, becoming sharply reflexed, clavate, 8–24 mm;

pedicel 8–28 mm.

0.8–1.6 mm.

numerous, in 2 rows per locule, lenticular to narrowly ovoid to narrowly obovoid, finely pitted, with ± pronounced membranous margin when immature.

= 14.