Flora of North America species comparison

numerous, spreading, mostly to 1 cm diam., stout.

few–several, descending, slenderly tuberous, to 5 mm diam.

persisting through anthesis, to 4–5, basal, reduced to sheathing bracts upward on stem, spreading, linear-lanceolate, keeled, 5–25 × 1 cm.

persisting through anthesis, basal, on proximal 1/2 of stem, ascending to spreading, linear-lanceolate to oblanceolate, to 18 × 1.5 cm (rarely wider).

spikes loosely to tightly spiraled, 3–7 or more flowers per cycle of spiral, sometimes nearly secund;

rachis densely pubescent, trichomes articulate, pointed, capitate glands absent.

loosely to tightly spiraled, 3 flowers per cycle of spiral;

rachis rather densely pubescent, trichomes without glands pointed, glandular obviously stalked, glands equaling or narrower than stipes.

nodding to somewhat ascending, white to cream, mostly gaping;

sepals distinct to base, lanceolate, 6–10 × 2–3 mm;

lateral sepals spreading;

petals oblong, 6–9 × 2 mm, apex obtuse;

lip creamy yellow centrally or some individuals with 2 brown-orange spots, ovate, 5–8 × 4 mm;

veins of lip straight, branches parallel;

basal calli conic, to 1 mm;

viscidium linear-lanceolate;

ovary mostly 8 mm.

curving through horizontal, white, somewhat gaping and open with wide-spreading lateral sepals;

sepals usually connate at base, 6.5–8(–9.9) mm;

lateral sepals curving outward throughout lengths, usually directed somewhat downward;

petals linear to linear-oblanceolate, apex obtuse;

lip creamy or very pale yellow centrally, oblong, with variably evident median constriction, 5.8–7.9 × 3.2–4.9 mm, apex broadly expanded with extensive transverse pleats, distal surface mostly glabrous adaxially;

basal calli prominent, stout;

veins few, branches mostly wide-spreading;

viscidia linear to linear-lanceolate;

ovary 3–6 mm.

monoembryonic.

monoembryonic.

= 30.

= 74.