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.

1–4, wide-spreading to ascending, scattered along stem, gradually to abruptly reduced to bracts distally;

blade linear-lanceolate, linear-oblong, or oblong-obovate, 7–23 × 0.7–5 cm.

dense to rather lax.

lax to 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, not showy to inconspicuous, whitish green or yellowish green, lip often paler;

lateral sepals reflexed;

petals linear to narrowly oblong-spatulate, margins entire or apex rarely slightly lacerate;

lip descending, without basal thickening, deeply 3-lobed, 10–17 × 13–17 mm, lobes extensively and deeply divided, commonly into filiform divisions, margins rarely merely fringed or middle lobe merely lacerate-fringed, lateral lobes narrowly to broadly cuneate, middle lobe cuneate-flabellate, usually narrow;

spur slenderly to markedly clavate, 11–23 mm;

rostellum lobes nearly parallel, directed downward, short, rounded;

pollinaria nearly straight;

pollinia remaining enclosed in anther sacs;

viscidia linear;

ovary slender to stout, mostly 8–20 mm.

= 42.