Flora of North America species comparison

(1–)2–3(–4), spreading to ascending, gradually to rather abruptly reduced to bracts distally;

blade lanceolate to elliptic-oblong, 5–35 × 1–7 cm.

(1–)2(–4), spreading, subopposite toward base of stem;

bracts (0–)1(–2) distally;

blade elliptic, lanceolate, to suborbiculate, 2–9 × 0.9–4 cm.

lax to dense.

rather lax to dense.

resupinate, inconspicuous, yellowish green;

lateral sepals porrect to reflexed;

petals oblong-orbiculate to ovate, apex somewhat crenulate;

lip descending to commonly reflexed, 2–6 × 1.8–5 mm, base auriculate, with prominent central tubercle, distal margin entire to slightly crenulate;

spur cylindric to strongly clavate, 4–8(–11) mm, apex rarely 2-lobed;

rostellum lobes mostly parallel to slightly diverging, directed downward, minute, obscure;

pollinia remaining enclosed in anther sacs;

viscidia mostly quadrangular, oblong-quadrangular, orbiculate, or broadly asymmetric, commonly canaliculate to nearly cylindric and difficult to assess;

ovary rather slender to stout, mostly 8–10 × 2 mm.

incompletely resupinate, inconspicuous, greenish;

lateral sepals porrect;

petals broadly ovate, margins entire;

lip projecting forward, concave, orbiculate, ovate, or elliptic, without basal thickening, 1.5–2.5 × 1.2–2 mm, margins entire;

spur stoutly cylindric to saccate, obtuse, 0.7–1.25 mm;

rostellum lobes spreading, directed downward, minute, obscure;

pollinaria straight;

pollinia evidently remaining enclosed in anther sacs;

viscidia oblong to suborbiculate-quadrangular;

ovary rather stout, mostly 2–4 mm.

= 42.