Flora of North America species comparison

2, in subequal basal pair lying on ground;

bracts (very rarely, 0–)1–6, scattered along stem;

blade broadly elliptic, orbiculate, or oblate, 7–24 × 5–19 cm.

few–several, abruptly diverging or sometimes ascending, scattered along stem;

blade oblong to ovate or lanceolate, 5.5–16(–28) × 1–4.5 cm.

lax.

very lax to dense, flowers sometimes irregularly grouped in fascicles.

resupinate, rather showy;

calyx mostly greenish white;

corolla mostly white;

lateral sepals reflexed to somewhat spreading;

petals lanceolate-falcate, margins entire;

lip descending to somewhat reflexed, linear-oblong to linear-lanceolate, without basal thickening, 10–23 × 1–2.5 mm, margins entire;

spur slenderly clavate, 28–46 mm;

rostellum lobes directed strongly forward, wide-spreading, angular;

pollinaria nearly straight, (4.6–)4.7–6.8 mm;

pollinia remaining enclosed in anther sacs;

viscidia orbiculate;

ovary slender to rather stout, mostly 16–29 mm.

resupinate, not showy, green to yellowish green, often suffused with blue or lip sometimes with red;

lateral sepals spreading to reflexed;

petals ovate- to lance-falcate, margins entire;

lip descending to somewhat reflexed or projecting, lanceolate to ovate, sometimes with prominent suborbiculate basal dilation, without basal thickening, 4–8 × 1.5–3 mm;

spur strongly clavate to scrotiform, 2–3 mm, apex obtuse;

rostellum lobes strongly diverging, very small, rounded, obscure;

pollinaria straight;

pollinia remaining enclosed in anther sacs;

viscidia orbiculate to oblong;

ovary rather slender to stout, mostly 5–9 mm.

= 42 [63].