Flora of North America species comparison

erect, branched or unbranched, 30–300 cm.

sometimes with lateral branches arising obliquely from rosette, 20–70(–100) cm.

in a basal rosette and cauline, basal 3–7 × 0.5–2 cm, sessile, blade oblong to oblong-lanceolate, base usually ± auriculate, margins entire;

cauline 3–8(–10) × 0.4–1.8 cm, blade lanceolate to oblong-lanceolate, gradually smaller, becoming linear-subulate distally.

in a basal rosette and cauline, basal 5–16 × 0.5–1.5 cm, cauline 2–12 × 0.5–2 cm;

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

bracts slightly longer than capsule they subtend.

long, wandlike, unbranched or branched.

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

4-merous, nearly actinomorphic, opening near sunrise;

floral tube 6–17 mm;

sepals 4–6 mm;

petals white, fading off-white or tinged pink, slightly unequal, rhombic, 4–6 mm, abruptly clawed;

filaments 5–8 mm, anthers 1.5–2 mm, pollen 85–100% fertile;

style 6–10, stigma exserted beyond anthers at anthesis.

2–several per spike opening per day near sunset;

buds erect, with free tips erect, 0.5–2 mm;

floral tube slightly curved upward to± straight, 15–40 mm;

sepals 6–13 mm;

petals yellow, broadly elliptic to rhombic-ovate, 5–16 mm;

filaments 4–18 mm, anthers 2–3.5 mm, pollen ca. 50% fertile;

style 20–40 mm, stigma surrounded by anthers at anthesis.

ovoid, 4-angled, somewhat flattened, 3–4 × 1.5–2.3 mm, valves with raised midrib and conspicuous lateral veins;

sessile.

narrowly lanceoloid, 10–20 ×2–3 mm.

1, pale yellow, oblanceoloid, 2.4–2.6 × 1–1.5 mm.

brown, sometimes flecked with dark red spots, ellipsoid, 1–1.9 × 0.4–0.8 mm.

= 14.

= 14.