Flora of North America species comparison

4–6, inserted toward base or scattered along stem, alternate, erect, ascending, or spreading;

blade suborbiculate or broadly ovate to elliptic-lanceolate, 3.3–17 × 2.5–9.5 cm.

2, radical, arising directly from rhizome, ascending to spreading;

blade broadly elliptic to oblong-, ovate-, or obovate-elliptic, 9–30 × 2.5–15 cm.

1–3;

sepals greenish, suffused, often heavily, with reddish brown or madder, or rarely clear green;

dorsal sepal lance-acuminate to elliptic-lance-acuminate, 33–60 × 8–16 mm;

lateral sepals connate;

synsepal 30–60 × 6–18 mm;

petals spreading-deflexed, same color as sepals, spirally twisted, linear to linear-lanceolate, 36–77 × 3–5 mm;

lip white, rarely suffused with magenta, obovoid or oblance-ovoid to oblance-fusiform, 19–33 mm;

orifice basal, 13–22 mm;

staminode lanceoloid to broadly ovoid or ellipsoid-ovoid.

solitary;

sepals reddish brown to green;

dorsal sepal lanceolate to lance-ovate or elliptic, 19–52 × 5–22 mm;

lateral sepals connate, synsepal 17–49 × 6–25 mm;

petals deflexed to somewhat spreading, somewhat spirally twisted, same color as sepals, linear- to ovate-lanceolate, 24–60 × 4–17 mm;

lip magenta to white, obovoid to oblance-ovoid, 30–67 mm, orifice a longitudinal fissure, length of lip;

staminode quadrangular to suborbicular-rhomboid or ovoid-deltoid.

= 20.