Flora of North America species comparison

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

prostrate, decumbent, or ascending from base, to 60(–130) cm.

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.

0.5–5 × 0.3–2.2 cm;

petiole 0–1.5(–2.5) cm, distal ones to 1 cm;

blade narrowly ovate, base attenuate, cuneate, or cordate, margins sparsely serrulate, apex acute.

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.

opening near sunrise;

floral tube 2.1–8.5 mm;

sepals 4–11.5 mm;

petals yellow, often red-dotted near base, 6–20 mm; episepalous filaments 2.8–8 mm, epipetalous filaments 1.5–6 mm, anthers 1–3 mm, less than 5% of pollen grains 4- or 5-pored;

style 6–23 mm, stigma surrounded by or exserted beyond anthers at anthesis.

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

often coiled in 1–2 spirals, 4-angled, 10–25 × 2–2.5 mm.

1–1.5 mm.

1.2–1.3 mm.