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.

several to many, ascending, scattered along stem, imperceptibly reduced to bracts distally;

blade lanceolate to ovate-lanceolate, to 26 × 5 cm.

lax.

lax.

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, showy, creamy white;

lateral sepals somewhat porrect;

petals flabellate, truncate, sometimes emarginate, apically lacerate;

lip descending, deeply 3-lobed, without basal thickening, 17–32 × 20–39 mm, distal margins of lobes deeply incised and fringed, lateral lobes flabellate, sometimes broadly and overlapping middle lobe, middle lobe flabellate, sometimes very broadly, emarginate;

spur slenderly clavate, 36–55 mm;

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

pollinaria geniculate;

pollinia directed forward (column appearing hooded), remaining enclosed in anther sacs;

viscidia orbiculate;

ovary slender, mostly 20–30 mm.

= 42.