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, 0.9–3(–3.7) mm diam. distal to leaves;

bracts 0–2(–4).

prostrate;

blade 6–20(–38) × 1–9 cm.

erect, folded, narrow, rather grasslike;

blade 6–16 × 0.3–1(–1.9) cm.

usually densely flowered, cylindric, 2.5–40 cm;

rachis shorter than peduncle;

bracts 6–24 mm.

usually sparsely flowered, (6–)9–30(–40) cm;

rachis usually longer than peduncle;

bracts 3–16(–25) 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.

translucent green, unscented;

sepals 2–4 × 0.8–2 mm;

dorsal sepal projecting between petals;

lateral sepals strongly recurved;

petals erect-recurved to sigmoid, ± falcate, linear-lanceolate, 2.2–4.5 × 0.7–1.7 mm;

lip projecting, strongly upcurved, subhastate, triangular-lanceolate, 2–3(–5) × 1.2(–3) mm, apex sometimes touching dorsal sepal;

spur ± club-shaped, 1–2.5 mm, always shorter than lip;

viscidia broadly ovate, 0.2–0.25 × 0.15–0.2 mm;

rostellum blunt.

5–12 mm.

3–9 mm.

cinnamon brown.

cinnamon brown.

= 42.