Flora of North America species comparison

sometimes with lateral branches arisingobliquely from rosette, 30–80 cm.

usually erect to slightly decumbent, unbranched to few-branched distally, (3–)15–30(–75) cm.

in a basal rosette and cauline, basal 7–17 × 0.5–1.5 cm, cauline 2–8 × 0.5–1.5 cm;

blade narrowly oblanceolate, gradually narrowly elliptic to narrowly oblong distally, margins lobed to remotely dentate or subentire;

bracts slightly longer than capsule they subtend.

in a basal rosette and cauline, basal 2–4 × 0.2–1.2 cm, petiole (0.2–)0.5–1.2(–2.5) cm, blade oblanceolate to obovate;

cauline 3–7 × 0.2–1.2 cm, petiole 0.1–1 cm, blade oblanceolate to obovate, margins entire or weakly and remotely denticulate.

open, lax, without lateral branches, mature buds usually not overtopping spike apex.

nodding, flowers in axils of distalmost few nodes.

1 or 2 per spike opening per day near sunset;

buds erect, with free tips erect to spreading, 0.3–0.8 mm;

floral tube slightly curved upward to straight, 23–37 mm;

sepals 7–13 mm;

petals yellow, broadly elliptic to rhombic-ovate, 8–17 mm;

filaments 6–10 mm, anthers 1.5–4 mm, pollen ca. 50% fertile;

style 30–45 mm, stigma surrounded by anthers at anthesis.

opening near sunrise, nearly unscented;

buds with free tips to 1 mm, connivent;

floral tube 3–10 mm;

sepals 2–4 mm;

petals bright yellow, fading pale yellow, or orangish yellow to pale pink, 5–10 mm;

filaments 3–4 mm, anthers 1–2 mm, pollen 40–70% fertile;

style 3–4 mm, stigma surrounded by anthers at anthesis.

narrowly lanceoloid, 10–25 ×2–3 mm.

clavate, 4-angled or narrowly 4-winged, 5–10 × 2–3 mm, stipe 1–2 mm;

sessile.

brown, sometimes flecked with darkred spots, ellipsoid, 1–1.3 × 0.5–0.7 mm.

0.7–0.8 × 0.2–0.3 mm.

= 14.

= 14.