Flora of North America species comparison

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

erect, red on proximal parts, usually green on distal ones, rarely red throughout, unbranched or with branches obliquely arising from rosette and secondary branches arising from main stem, 100–300(–400) cm.

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.

in a basal rosette and cauline, basal 18–32 × (2–)3–6.5 cm, cauline 6–20 × 1.5–6.5 cm;

blade soft and thin, bright green, usually flat, rarely undulate, narrowly oblanceolate to narrowly obovate, or narrowly elliptic to elliptic, sometimes narrowly ovate distally, margins bluntly dentate or subentire, teeth widely spaced, sometimes sinuate-dentate proximally or lobed;

bracts usually caducous.

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

erect, often with secondary or tertiary branches just proximal to main one.

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.

opening near sunset;

buds erect, 5–9 mm diam., with free tips terminal, erect, 2–9 mm;

floral tube 35–55 mm;

sepals yellowish green or flushed with red, 22–46 mm;

petals yellow to pale yellow, fading pale yellowish white, very broadly obcordate or obovate, (25–)30–45 mm;

filaments 18–27 mm, anthers 10–15 mm, pollen 90–100% fertile;

style 57–90 mm, stigma exserted beyond anthers at anthesis.

lanceoloid, 13–25 × 2.5–4 mm.

erect or slightly spreading, dull green when dry, narrowly lanceoloid to narrowly ovoid, 15–35 × 3.5–5.5 mm, free tips of valves 0.5–2.5 mm.

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

1–1.7 × 0.6–1.2 mm.

= 14.