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.

widely ovoid, 3.5(–8) × 4–8 cm, ca. 0.7–0.8 times taller than wide;

scales broad, unsegmented, longest ca. 3–4 cm;

stem roots usually present.

to 1.9 m. Buds rounded in cross section.

white-lanate, purplish, to 2 m. Buds usually flat-sided, somewhat triangular 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.

scattered, horizontal and drooping at tips, 10–15(–18) × ca. 1.5 cm, ca. 3–6(–10) times longer than wide, distal bearing 1(–3) dark purple axillary bulbils;

blade lanceolate, often narrowly so, margins not undulate, papillose, apex white-lanate, narrowly acute (rounded in distal leaves).

racemose, 1–31-flowered.

racemose, 3–6(–25)-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, not fragrant;

perianth Turk’s-cap-shaped;

sepals and petals reflexed ca. 1/5–1/4 along length from base, orange with many purple-brown spots, not distinctly clawed, 7–10 × 1–2 cm, adaxial base bearing pubescent strip;

sepals not ridged abaxially;

stamens strongly exserted;

filaments very widely spreading, diverging ca. 25° from axis;

anthers purplish, ca. 2 cm;

pollen rust;

pistil 6–9 cm;

pedicel sometimes dichotomous, stout and relatively short, to 10 cm.

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

3–4 cm.

141–303.

not counted.

= 24.

= 24, 36.