Flora of North America species comparison

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

bracts (4–)12–37.

few–several, ascending to arcuate-spreading, scattered along stem, gradually reduced to bracts distally;

blade oblong to linear-lanceolate, 2.7–23 × 0.4–4 cm.

prostrate;

blade 6–20(–38) × 1–9 cm.

usually densely flowered, cylindric, 2.5–40 cm;

rachis shorter than peduncle;

bracts 6–24 mm.

lax to very dense.

resupinate, not showy, yellowish green with dull yellowish lip, or more whitish green under cool conditions;

lateral sepals spreading to reflexed;

petals rhombic-ovate- to lance-falcate, margins entire;

lip descending, projecting, or apex adhering to dorsal sepal and petal apices, rhombic-lanceolate to lanceolate, without basal thickening, 2.5–6 × 1–1.5 mm, base not rounded-dilated, margins entire;

spur clavate or sometimes rather cylindric, 2–5 mm, apex usually broadly obtuse;

rostellum lobes divergent, directed downward, very small, rounded, obscure;

pollinaria straight;

pollinia rotating forward and/or fragmenting, loose pollen masses free of anther sacs and trailing downward onto stigma;

viscidia orbiculate;

ovary rather slender to stout, mostly 5–13 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.

5–12 mm.

cinnamon brown.

= 42.

= 42.