Flora of North America species comparison

unbranched or with branched central stem and ascending to decumbent lateral branches arising from rosette, 5–50(–80) cm.

unbranched or branched mainly in distal part, 25–70 cm.

in a basal rosette and cauline, basal 5–14 × 0.5–2.5 cm, cauline 2–8 × 0.5–2.5 cm;

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

bracts spreading, flat.

in a basal rosette and cauline, basal 7–15 × 1–2.5 cm, cauline 3–13 ×0.4–2.3 cm;

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

bracts longer than capsule they subtend, 1–3 cm.

dense, often with several lateral branches, mature buds usually overtopping spike apex.

usually 1 opening per day near sunset;

buds with free tips erect, 0.1–1 mm;

floral tube erect, becoming recurved and nodding, then erect again just before anthesis, 15–50 mm;

sepals 5–25 mm;

petals yellow, fading reddish orange, broadly obovate to obcordate, 5–25(–35) mm;

filaments 6–18 mm, anthers (2–)3–9 mm, pollen ca. 50% fertile;

style 20–60 mm, stigma surrounded by or slightly exserted beyond anthers at anthesis.

2–several per spike opening per day near sunset;

buds erect, with free tips erect or spreading, 1–6 mm;

floral tube nearly straight, 25–47 mm;

sepals 15–30 mm;

petals yellow, broadly elliptic to nearly rhombic, 18–35 mm;

filaments 15–30 mm, anthers 3–8 mm, pollen 85–100% fertile;

style 45–75 mm, stigma usually exserted beyond anthers at anthesis.

cylindrical, sometimes slightly enlarged distally, 20–45 ×2–4 mm.

lanceoloid, 13–25 × 2.5–4 mm.

brown, sometimes dark-flecked, 0.9–1.5 × 0.6–1 mm.

brown, often flecked with darker spots, ellipsoid to broadly ellipsoid, 1.1–1.8 × 0.4–0.8 mm.

= 14.