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, initially near middle of stem, subopposite, wide-spreading, distal portion elongating greatly in fruit;

blade elliptic to ovate-orbiculate, 4–12 × 2.5–7.5 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.

(1–)2–4;

sepals dull yellow, marked and suffused often intensely with reddish brown or dark purple;

dorsal sepal lanceolate, 13–25 × 3–8 mm;

lateral sepals connate, synsepal 11–23 × 4–9 mm;

petals porrect-spreading, same color as sepals, flat, ovate-lanceolate to lance-acuminate, 10–23 × 6–17 mm;

lip color of sepals, usually less intensely marked, mostly obovoid, 8–14(–25) mm, orifice basal, 4–5 mm;

staminode ellipsoid to oblong.

= 20.