Flora of North America species comparison

erect, usually with 1+ ascending branches from basal rosette, 30–60 cm.

usually with decumbent lateral branches from basal rosette, 5–60 cm.

1–12 × 0.2–1.7 cm;

petiole 0–1 cm, distal ones sessile;

blade lanceolate to narrowly ovate, base cuneate to truncate, basal and proximal cauline often attenuate, margins denticulate, apex acute.

1–5(–11) × 0.2–0.7(–1.4) cm;

petiole 0–0.2(–0.4) cm, distal ones sessile;

blade lanceolate to narrowly ovate, base often cuneate to truncate, sometimes attenuate, margins sparsely denticulate, apex acute to obtuse.

opening near sunrise;

floral tube 1.2–2 mm;

sepals 1–2.5 mm;

petals yellow, with 1 or 2 red dots basally, 1.5–3.5(–4.5) mm; episepalous filaments 0.8–1.5 mm, epipetalous filaments 0.5–0.9 mm, anthers 0.4–0.5 mm, less than 5% of pollen grains 4- or 5-pored;

style 2–3.5 mm, stigma surrounded by anthers at anthesis.

opening near sunrise;

floral tube 1–4.2 mm;

sepals (1.5–)2.5–8 mm;

petals yellow, sometimes with 1–3 red dots basally, (2–)3.5–13 mm; episepalous filaments (0.5–)1.5–6.5 mm, epipetalous filaments (0.2–)0.5–3.8 mm, anthers (0.4–)0.8–2.2 mm, less than 5% of pollen grains 4- or 5-pored;

style (2.1–)3–10.5 mm, stigma surrounded by at least anthers of longer stamens, often by both sets, at anthesis.

straight or 1-coiled spiral, subterete in living material, 4-angled when dry, 13–25 × 1.1–1.2 mm.

usually 1–3-coiled spiral, subterete in living material, 4-angled when dry, 13–24 × 0.7–1.2 mm.

0.7–1.1 mm.

1–1.5 mm.

= 28.