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, spreading to ascending, abruptly or gradually reduced to bracts distally;

blade linear-lanceolate or lanceolate to lance-oblong, 15–26 × 1–3 cm.

dense to rather lax.

rather 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, orange to pale dull yellow;

dorsal sepal entire or emarginate;

lateral sepals reflexed;

petals linear to obovate, apically fringed to merely lacerate-dentate;

lip porrect, ovate to ovate-orbiculate, without basal thickening, 5–10 × 4–9 mm, margins deeply filiform-fringed;

spur slenderly cylindric, 8–17 mm;

rostellum lobes directed downward, distally retrorse, digitate;

pollinaria with stalks recurved;

pollinia remaining enclosed in anther sacs;

viscidia orbiculate to suborbiculate;

ovary slender, 10–19 mm.