Flora of North America species comparison

swollen at base (rarely attenuate), 2–12 mm diam. distal to leaves;

bracts (4–)12–37.

attenuate toward tuberoid, fistulous, 1.5–12(–17) mm diam. distal to leaves;

bracts 3–50.

prostrate;

blade 6–20(–38) × 1–9 cm.

prostrate to erect-spreading;

blade 7–22(–30) × 1.5–4(–6.2) cm.

usually densely flowered, cylindric, 2.5–40 cm;

rachis shorter than peduncle;

bracts 6–24 mm.

± densely flowered, 3–33 cm;

rachis usually shorter than peduncle;

bracts 4–17(–22) mm.

mostly white, fragrance strong at night;

sepals white with green midvein, 3–7 × 1.6–3 mm;

dorsal sepal ovate to oblong;

lateral sepals usually widespreading, ovate-elliptic to oblong-lanceolate;

petals spreading, recurved, straight, ovate to oblong-lanceolate, (3–)4–6 × 1.5–2.5 mm;

lip recurved, pale greenish to white, triangular-lanceolate to lanceolate, 2.5–7 × 1.5–3.5 mm;

spur usually deflexed, curved, (3–)7–14 mm;

viscidia 0.4–1 × 0.15–0.5 mm;

rostellum blunt.

green, fragrance nocturnal, strong, pleasant;

sepals 2–4.8 × 1.3–3.7 mm;

dorsal sepal ovate-elliptic to ovate;

lateral sepals spreading to recurved, oblong-lanceolate to oblong-ovate;

petals erect-spreading, asymmetrically triangular-ovate, 2.2–4.5 × 1–2.2 mm;

lip straight to ± bent, ovate-triangular, 1.7–5 × 1.3–5 mm;

spurs mostly deflexed, sometimes mixed with horizontal ones, 9–16 mm;

viscidia broadly oblong, 0.4–0.75 × 0.15–0.4 mm;

rostellum blunt.

5–12 mm.

5–13 mm.

cinnamon brown.

blackish brown, rarely brown.

= 42.