Flora of North America species comparison

2–several, spreading to ascending, scattered along stem, rather abruptly to gradually reduced distally;

blade linear-lanceolate, ovate-lanceolate, elliptic-lanceolate, 5–35 × 1–5 cm.

1–3, ascending to spreading, rather abruptly or gradually reduced to bracts distally;

blade lance-oblong to linear-lanceolate, 4.5–32 × 1–3 cm.

dense to rather lax.

dense.

resupinate, showy, white;

lateral sepals reflexed;

petals linear to oblanceolate, apex fringed to nearly entire;

lip reflexed to porrect, without basal thickening, ovate-oblong to oblong-elliptic, rarely quadrangular-suborbiculate, margin fringed;

spur essentially cylindric, slender;

rostellum lobes curving forward, slightly spreading, angular-elongate;

pollinaria with stalks curved forward;

pollinia remaining enclosed in anther sacs;

viscidia elliptic-suborbiculate to orbiculate;

ovary slender, 10–28 mm.

resupinate, showy, pale yellow-orange to pale orange;

dorsal sepal entire or rarely apically dentate;

lateral sepals spreading;

petals elliptic to linear-oblong, margins entire;

lip descending, ovate-elliptic to obovate or oblong, 3–5 × 1.5–4 mm, margins eroded to lacerate or rarely entire, with basal pair of fleshy ridges on adaxial surface;

spur tapering from broad base to slender tube, 5–10 mm;

rostellum lobes curved downward, short, rounded;

pollinaria essentially straight; large pollinia protruding forward;

viscidia orbiculate to suborbiculate;

ovary slender to somewhat stout, 5–11 mm.