Flora of North America species comparison

unbranched or branched primarily distally, 25–70 cm.

usually many-branched, sometimes unbranched, often twining among vegetation, sometimes rooting at nodes, 5–25(–70) cm.

in a basal rosette and cauline, basal 6–12 × 0.7–2 cm, cauline 2–10 ×0.5–3 cm;

subsessile;

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

bracts shorter than capsule they subtend, 0.5–1.7 cm.

in a basal rosette and cauline, basal usually quickly deciduous, (1–)2–5 × (0.2–)0.5–1.5 cm;

petiole 0–0.6 cm;

blade oblanceolate, linear-lanceolate to linear distally, margins few toothed to pinnately lobed to sinuate-dentate distally.

open, lax, usually unbranched, mature buds usually overtopping spike apex.

1–few per spike opening per day near sunset;

buds erect, with free tips erect, 1–3 mm;

floral tube nearly straight, 20–40 mm;

sepals 15–25 mm;

petals yellow, broadly elliptic to rhombic-ovate, 20–30 mm;

filaments 17–22 mm, anthers 4–7 mm, pollen 85–100% fertile;

style 50–65 mm, stigma usually exserted beyond anthers at anthesis.

1–few opening per day near sunset;

buds often twisted, free tips coherent;

floral tube (37–)45–60(–65) mm;

sepals (16–)18–26(–30) mm;

petals lemon-yellow, fading orange-red to reddish purple, usually elliptic, sometimes oblanceolate, (18–)21–30(–32) mm;

filaments 15–18(–22) mm, anthers red, 6–13 mm;

style (55–)65–86(–94) mm, stigma exserted beyond anthers at anthesis.

narrowly lanceoloid, 15–33 × 2–3 mm.

woody, narrowly ovoid to ovoid, 4-angled, 8–13(–16) × 3–4 mm, apex tapering to a short sterile beak 2–3 mm, valves with a prominent, broad midrib and capsule appearing 8-ribbed, tardily dehiscent ca. 1/3 capsule length.

dark brown, ellipsoid, 1–1.4 ×0.4–0.6 mm.

2–2.5(–3.3) × 1.2–1.5 mm, sometimes with a small wing at distal end or a raised ridge along one longitudinal margin.

= 14.

= 14, 28.