Flora of North America species comparison

5–10, along length of stem, alternate, ascending to spreading;

blade elliptic-lanceolate to broadly elliptic, 5–16 × 1.5–6.5 cm.

3–4(–5), on proximal or middle portion of stem, alternate, erect-ascending;

blade lanceolate or elliptic to oblanceolate, 7–20 × 0.9–5.3 cm.

3–18(–22);

sepals yellow-green to pale brownish yellow;

dorsal sepal elliptic, 14–20 × 7–13 mm;

lateral sepals connate almost to apex;

synsepal 12–20 × 10–12 mm;

petals spreading, same color as sepals or more yellowish, linear-oblong to linear-lanceolate, flat, 14–16 × 3–5 mm;

lip white, sometimes pinkish, obovoid, 15–20 mm;

orifice basal, 11–14 mm;

staminode suborbicular-subauriform.

1(–2);

sepals green to pale brownish yellow, usually spotted and striped with reddish brown or madder;

dorsal sepal ovate to ovate-lance-acuminate, 15–35 × 7–13 mm;

lateral sepals connate;

synsepal 13–35 × 7–15 mm;

petals spreading to somewhat deflexed, same color as sepals, spirally twisted or spiral-undulate, lanceolate to linear-lanceolate, 23–46 × 3–5 mm;

lip white, obovoid or oblance-ovoid to oblance-fusiform, 17–27 mm;

orifice basal, 10–15 mm;

staminode lanceoloid or oblong-lanceoloid to ellipsoid.

= 20.