Flora of North America species comparison

subrhizomatous to ± ovoid, 2.7–10 × 4.4–13.4 cm, 0.2–0.9(–1.4) times taller than long;

scales unsegmented or notched with 2(–3) poorly defined segments, sometimes 2-segmented, longest 3.3–11.9 cm;

stem roots absent.

rhizomatous, unbranched, continuously scaly, 1.4–3.5 × 3.3–9.2 cm, 0.3–0.5 times taller than long;

scales (1–)2–3(–4)-segmented, longest 1.1–3.4 cm;

stem roots absent.

to 2 m, often glaucous.

to 1.7 m.

rounded in cross section.

rounded in cross section.

in 1–8 whorls or partial whorls, 3–16 leaves per whorl, horizontal and drooping at tips to ascending, occasionally nearly clasping stem, 3.7–12.3 × 0.9–4.7 cm, 2–6.5 times longer than wide;

blade oblanceolate, sometimes obovate, rarely elliptic, margins undulate or not, apex acute, often widely so;

veins and margins ± smooth abaxially.

in 2–5 whorls or partial whorls, 3–13 leaves per whorl, ± horizontal and drooping at tips or ascending in sun, 4–15.1 × 0.5–4.4 cm, 2.3–10.8 times longer than wide;

blade ± elliptic, margins not undulate, apex acute, often narrowly so;

veins and margins ± smooth abaxially.

racemose, 1–33-flowered.

racemose, 1–26(–41)-flowered.

opening before dusk, ± horizontal, slightly bilaterally symmetric, strongly fragrant;

perianth ± funnelform;

sepals and petals recurved 2/3–3/4 along length from base and scarcely overlapping to form tube, lower usually less recurved than upper and forming landing platform, white, often aging deep pink or lavender, often with short yellowish stripe extending from basal median nectaries, often with fine magenta spots concentrated basally, not distinctly clawed;

sepals sometimes purplish abaxially, not ridged abaxially, (6.1–)6.7–11.3 × 0.9–1.7 cm;

petals noticeably wider than sepals, oblanceolate and often very wide distally, (6.1–)6.6–11.2 × 1.1–2.4 cm, apex widely acute, obtuse, or rounded;

stamens barely exserted;

filaments barely spreading, diverging 2°–8° from axis;

anthers off white or cream, becoming pale pink or yellow, 0.8–1.5 cm;

pollen yellow or cream;

pistil 7.5–10.4 cm;

ovary 1.7–3.4 cm;

style pale green;

pedicel 4.8–15 cm.

± horizontal to ascending, sometimes slightly bilaterally symmetric, not fragrant;

perianth ± funnelform;

sepals and petals somewhat recurved 3/5–2/3 along length from base, not strongly reflexed, lower often less recurved than upper and forming landing platform, orange or yellowish proximally, darker (light orange, orange, red-orange, red, or rarely ± pinkish) on distal 2/5, occasionally uniformly light orange or rarely yellow, spotted dark purple-brown or maroon, often pale abaxially, not distinctly clawed;

sepals not ridged abaxially, noticeably wider than petals, 3.2–4.2 × 0.8–1.3 cm;

petals 3.2–4.2 × 0.6–1.2 cm;

stamens moderately exserted;

filaments moderately spreading, diverging 8°–17° from axis;

anthers pale yellow, orangish, or magenta, 0.3–0.8 cm;

pollen yellowish to red-orange;

pistil 2.3–3.7 cm;

ovary 0.8–1.4 cm;

style pale green;

pedicel 3.5–15.5 cm.

often with 6 longitudinal ridges, 2.7–5.8 × 1.6–2.9 cm, 1.3–2.3 times longer than wide.

1.6–2.7 × 1.2–1.8 cm, 1.2–1.9 times longer than wide.

123–231.

90–132.

= 24.