Flora of North America species comparison

erect to ascending, unbranched to much branched, 5–50 cm.

erect, usually unbranched or with few ascending branches, 10–30(–45) cm.

in a basal rosette and cauline, basal 4–15 × 1–3 cm, cauline 2–10 × 0.5–3.5 cm;

blade green, narrowly oblanceolate to narrowly elliptic or narrowly oblong, margins usually dentate or deeply lobed;

bracts spreading, flat.

in a basal rosette and cauline, basal 2–5 × 0.5–1.5 cm, petiole 0.5–2 cm, blade oblanceolate to elliptic, margins subentire;

cauline 3–6 × 0.2–0.6 cm, petiole 0.2–0.6(–1.5) cm, blade narrowly lanceolate to linear, margins subentire.

erect, flowers in leaf axils in distal 1/2 of plant.

usually 1 opening per day near sunset;

buds erect, with free tips erect, 0.3–3 mm;

floral tube 12–35 mm;

sepals 5–15 mm;

petals yellow, fading orange or reddish tinged, broadly obovate or obcordate, 5–22 mm;

filaments 3–14 mm, anthers 4–5 mm, pollen ca. 50% fertile;

style 20–50 mm, stigma surrounded by anthers at anthesis.

opening near sunrise;

buds with free tips to 1 mm, erect to spreading;

floral tube 4–10 mm;

sepals 4–8 mm;

petals pale yellow, fading pale pink, 5–14 mm;

filaments 3–7 mm, anthers 2–4 mm, pollen 85–100% fertile;

style 3–7 mm, stigma surrounded by anthers.

cylindrical, sometimes slightly enlarged toward apex, 20–50 × 2–4 mm.

broadly clavate, 4-angled, 5–15 × 3–5 mm, stipe 2–5 mm;

sessile.

ellipsoid to subglobose, 0.9–1.8 × 0.4–0.9 mm.

1 × 0.5 mm.

= 14.

= 14.