Flora of North America species comparison

basally swollen above tuberoid, 0.7–4.5 mm diam. distal to leaves;

bracts 3–15.

attenuate toward tuberoid, fistulous, 1–8 mm diam. distal to leaves;

bracts 3–12.

prostrate;

blade 6–19 × 1–4.5 cm.

erect-spreading;

blade 9–20(–27) × 1.5–3.1 cm.

± densely flowered, 3.5–32 cm;

rachis ± length of peduncle;

bracts 3–12 mm.

sparsely flowered, (3–)10–40(–56) cm;

rachis at least as long as peduncle;

bracts 3–16 mm.

± white with green or yellow-green midveins, fragrance nocturnal, strong, clovelike;

sepals 2.5–4.5 × 1–2 mm;

dorsal sepal projecting forward between petals, oblong to lanceolate;

lateral sepals reflexed-spreading, obliquely oblong-lanceolate;

petals reflexed-spreading, oblique to falcate, oblong, 2–5 × 1–2 mm;

lip straight to ± deflexed, oblong to ovate-elliptic, 2.2–5.3 × 1–2.5 mm;

spur ± horizontal, straight, 7–12 mm;

viscidia oblong, 0.5–0.7 × 0.2–0.3 mm;

rostellum blunt.

green, fragrance nocturnal, honeylike;

sepals 2.3–4 × 1.2–2.5 mm;

dorsal sepal spreading to recurved, oblong to ovate;

lateral sepals lanceolate to oblong;

petals projecting to ± erect-spreading, asymmetrically triangular-ovate, 2.6–3.8 × 1.2–2 mm;

lip deflexed, triangular-ovate, 1.6–4 × 1.6–3.5 mm;

spur horizontal to deflexed, narrowly cylindric, 3–6(–9) mm;

viscidia ovate to oblong, 0.35–0.6 × 0.2–0.4 mm;

rostellum blunt.

4–13 mm.

4–12 mm.

cinnamon brown.

blackish brown.

= 42.