Flora of North America species comparison

unbranched or with many ascending branches arising near base, erect, 10–50 cm.

several to many, decumbent to ascending, branched, 4–20(–30) cm.

in a basal rosette and cauline, basal 1–2(–4) × 0.2–0.6 cm, petiole 0.2–1(–1.5) cm, blade ovate to obovate or narrowly elliptic;

cauline 1–4 × less than 0.1 cm, sessile, blade linear or filiform.

0.6–5 × 0.08–0.6 cm, fascicles of small leaves 0.2–1 cm often present in non-flowering axils;

petiole 0 cm;

blade narrowly lanceolate or narrowly oblanceolate, base attenuate to truncate, sometimes clasping, margins entire or subentire, sometimes revolute, sometimes weakly undulate, apex acute to obtuse.

usually 1–3 opening per day near sunrise;

buds without free tips;

sepals 1.5–2 mm;

petals bright yellow, fading pink, obcordate to obovate, 3–5(–7) mm;

filaments 1–2 mm, anthers 0.5–1 mm;

style 1–2 mm, stigma surrounded by anthers at anthesis.

usually 1 per stem opening per day near sunset;

buds with free tips 0.3–3 mm;

floral tube 25–60 mm, funnelform in distal 1/2 or less;

sepals 8–20 mm;

petals yellow, fading pale pink or pale purple, 12–28 mm;

filaments 6–12 mm, anthers 5–11 mm, pollen 85–100% fertile;

style 30–75 mm, stigma yellow, quadrangular, usually exserted beyond anthers.

ellipsoid-rhombic to subglobose, 4-angled, 4–6(–10) × 1.5–3 mm, stipe 0–4 mm, valve midrib raised at distal end, indehiscent or tardily dehiscent distally;

sessile.

6–25 × 1–3 mm, hard, promptly dehiscent throughout their length.

clustered in each locule, ovoid, surface minutely papillose, 1 × 0.5 mm.

obovoid, 1.5–2.5 mm.

= 14.

= 14.