Flora of North America species comparison

variable, subrhizomatous to ± ovoid, 3.1–8.1 × 3.6–10.6 cm, 0.3–1.4 times taller than long;

scales 2–3(–5)-segmented, some unsegmented, longest 3.1–7.3 cm;

stem roots absent.

± ovoid, 3.9–9.4 × 2.5–7.1 cm, 1.1–2.6 times taller than long;

scales unsegmented, longest 4–8.9 cm;

stem roots absent.

to 1.7 m, glaucous or not.

to 2 m, often glaucous.

rounded in cross section.

rounded in cross section.

in 1–9 whorls or partial whorls, 3–25 leaves per whorl, usually ascending, 1.7–15.7 × 0.4–4.7 cm, 2.4–7.4 times longer than wide;

blade weakly oblanceolate to obovate or ± elliptic, margins usually somewhat undulate, apex acute;

veins and margins ± smooth abaxially.

in 3–5(–more) whorls or partial whorls, 3–15 leaves per whorl, usually ± ascending, sometimes horizontal and drooping at tips, 3.2–12.3 × 1–2.8 cm, 2–6.4 times longer than wide;

blade oblanceolate, sometimes obovate, rarely elliptic, margins usually undulate, apex acute, often widely so, or obtuse;

veins and margins ± smooth abaxially.

racemose, 1–25(–45)-flowered.

racemose, often with flowers in loosely defined whorls, 1–40-flowered.

pendent to nodding, not fragrant;

perianth Turk’s-cap-shaped;

sepals and petals reflexed 2/5–1/2 along length from base, yellow or orange to occasionally red, with copious maroon spots, often darker and especially reddish abaxially, not distinctly clawed;

sepals not ridged abaxially, appearing wide for their length, 3.4–7.1 × 0.8–1.9 cm;

petals 3.5–6.9 × 0.8–1.9 cm;

stamens barely to moderately exserted;

filaments moderately spreading, diverging 10°–20° from axis;

anthers pale yellow to yellow, 0.5–1.3 cm;

pollen orange or yellow;

pistil 2.4–3.7 cm;

ovary 1.1–2.2 cm;

style green;

pedicel 2.8–20.2 cm.

ascending to erect, fragrant;

perianth funnelform;

sepals and petals recurved 1/2–2/3 along length from base, white, aging pink-purple, with fine magenta spots concentrated proximally or less often generally distributed, often reddish or purplish abaxially, not distinctly clawed;

sepals not ridged abaxially, 4.3–6.6 × 0.6–1.4 cm;

petals noticeably wider than sepals, oblanceolate and often very wide proximally, 4.2–6.4 × 0.9–1.9 cm, apex widely acute, obtuse, or rounded;

stamens included;

filaments barely spreading, diverging 3°–12° from axis;

anthers pale yellow, 0.4–0.8 cm;

pollen yellow;

pistil 2.7–3.8 cm;

ovary 1.2–1.8 cm;

style pale green;

pedicel 1.4–9.5 cm.

2.2–5.4 × 1.1–2 cm, 1.7–3.3 times longer than wide.

usually with 6 longitudinal ridges, 2–3.7 × 1.7–2.7 cm, 1.1–1.7 times longer than wide.

135–330.

67–189.

= 24.

= 24.