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.

2–5, wide-spreading, recurved to somewhat ascending, scattered along stem, gradually reduced to bracts distally;

blade lanceolate, oblong-elliptic, or oblong-obovate, 5–22 × 1.5–7 cm.

lax.

lax to very dense.

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, lavender- to rose-purple, rarely white;

lateral sepals reflexed to somewhat spreading;

petals spatulate to broadly obovate or cuneate-oblong, margins dentate-lacerate to sparsely fringed;

lip descending to somewhat porrect, deeply 3-lobed, without basal thickening, 5–13 × 5–17 mm, distal margins of lobes fringed, sometimes deeply, lateral lobes often reflexed or slightly elevated above middle lobe, broadly to narrowly cuneate, middle lobe sometimes reflexed, broadly cuneate-flabellate, often emarginate to 2-fid;

spur slenderly cylindric to slightly clavate, 12–22 mm;

rostellum lobes nearly parallel, directed downward, short, rounded;

pollinaria nearly straight;

pollinia remaining enclosed within anther sacs;

viscidia suborbiculate to broadly elliptic;

ovary slender to stout, 9–16 mm.

= 42.