Flora of North America species comparison

few–several, spreading to descending, tuberous, mostly to 1 cm diam.

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

persisting through anthesis or fugaceous, basal, often on proximal portion of stem, ascending, linear to linear-lanceolate, linear-oblanceolate, oblanceolate or elliptic, to 34 × 3.5 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).

usually very tightly spiraled, rarely loosely spiraled, usually 3 flowers per cycle of spiral;

rachis glabrous to sparsely pubescent, trichomes less (usually much less) than 0.18 mm, capitate glands often sessile.

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.

ascending, creamy to markedly yellowish, slenderly tubular;

sepals connate at base, 4.6–11 mm, apex reflexed-spreading;

petals linear-lanceolate to linear-oblanceolate, apex reflexed-spreading, obtuse to subacute or subemarginate;

lip lance-ovate to lanceolate, 4–9.5 × 1.9–4.3 mm, apex recurved less than to scarcely more than apices of sepals and petals, only slightly or not at all dilated, with subapical dense cushion of peg-shaped trichomes on adaxial surface;

veins few to several, branches wide-spreading or often parallel;

viscidia linear to linear-elliptic;

ovary mostly 2–7.5 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.

= 44 [66].

= 74.