Flora of North America species comparison

2–several, spreading to ascending, scattered along stem, rather abruptly to gradually reduced distally;

blade linear-lanceolate, ovate-lanceolate, elliptic-lanceolate, 5–35 × 1–5 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.

dense to rather lax.

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

resupinate, showy, white;

lateral sepals reflexed;

petals linear to oblanceolate, apex fringed to nearly entire;

lip reflexed to porrect, without basal thickening, ovate-oblong to oblong-elliptic, rarely quadrangular-suborbiculate, margin fringed;

spur essentially cylindric, slender;

rostellum lobes curving forward, slightly spreading, angular-elongate;

pollinaria with stalks curved forward;

pollinia remaining enclosed in anther sacs;

viscidia elliptic-suborbiculate to orbiculate;

ovary slender, 10–28 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].