Flora of North America species comparison

rhizomatous, unbranched, continuously scaly, 1.5–4.7 × 3.5–11 cm, 0.2–0.6 times taller than long;

scales (1–)2(–4)-segmented, longest 0.9–3.7 cm;

stem roots absent.

± ovoid, 3.6–7.5 × 2–5.2 cm, 0.9–2.4(–2.7) times taller than long;

scales unsegmented, longest 3.1–6.4 cm;

stem roots absent.

to 1.9 m. Buds rounded in cross section.

to 2.1 m. Buds rounded in cross section.

occasionally scattered in young plants or in 1–5 whorls or partial whorls, 3–18 leaves per whorl, ± horizontal and drooping at tips or ascending, 7.8–29 × 0.5–4.9 cm, 2.6–29 times longer than wide;

blade elliptic to narrowly linear, or ± obovate, often lanceolate in distal leaves, margins not undulate, apex acute, often narrowly so;

veins and margins ± smooth abaxially.

in 2–7 whorls or partial whorls (scattered and ± proximal in dry, exposed sites), 3–22(–40) leaves per whorl, drooping at tips to ascending, 6–16 × 0.9–4.4 cm, 2.6–8.5 times longer than wide;

blade elliptic, usually narrowly so, often weakly oblanceolate, rarely obovate, margins undulate or not, apex acute;

veins and margins ± smooth abaxially.

racemose, 1–31-flowered.

racemose, 1–27-flowered.

opening before dusk, horizontal or somewhat nodding, slightly bilaterally symmetric, strongly fragrant;

perianth funnelform;

sepals and petals recurved 3/5 along length from base, lower less recurved than upper and forming landing platform, bright yellow with sparse, usually minute maroon spots, not distinctly clawed;

sepals not ridged abaxially, oblanceolate, 7.7–10.7 × 1.1–1.7 cm;

petals noticeably wider than sepals, often very wide distally, 7.8–10.6 × 1.1–2.1 cm, apex widely acute or sometimes obtuse;

stamens barely exserted;

filaments barely spreading, diverging at 5°–12°;

anthers pale magenta-brown, 0.8–1.4 cm;

pollen rust-orange or orange-brown;

pistil 5.3–9.3 cm;

ovary 1.6–2.9 cm;

style green, often pale;

pedicel 2–17.5 cm.

pendent, fragrant;

perianth Turk’s-cap-shaped;

sepals and petals reflexed 1/3 along length from base, pink, less often white, and if so usually aging pink, usually with copious maroon spots and proximal median longitudinal yellow stripe extending from basal nectaries, not distinctly clawed;

sepals darker pink abaxially and usually distally, not ridged abaxially, 3.4–7.2 × 0.9–1.7 cm;

petals 3.2–7.1 × 0.9–1.9 cm;

stamens moderately exserted;

filaments ± widely spreading, diverging 10°–22° from axis;

anthers pale red-orange or magenta, 0.5–1.4 cm;

pollen orange;

pistil 2.9–4.2 cm;

ovary 1.5–3 cm;

style green, often pale;

pedicel 8.8–23.8 cm.

3.9–5.9 × 1.1–1.7 cm, 2.5–4.4 times longer than wide.

2.9–5.7 × 1–1.6 cm, 2.2–3.7 times longer than wide.

141–303.

177–309.

= 24.

= 24.