Flora of North America species comparison

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

few, slender, spreading to descending, mostly to 0.5 cm 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, few–several, basal, usually on proximal 1/2 stem, recurved-spreading, oblanceolate, 3–15 × 0.5–1.5 cm.

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.

tightly spiraled, usually 3 flowers per cycle of spiral, rarely loosely spiraled in depauperate plants;

rachis pubescent, some trichomes clavate to capitate, glands obviously stalked.

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.

pure white;

sepals distinct to base, slightly spreading, 3.5–6.1 × 1–1.5 mm;

petals lanceolate, 6 × 1 mm;

lip ovate, 5 × 3 mm, apex with finely crisped margin;

veins few, branches parallel;

basal calli spreading, slender, mostly to 0.75 mm;

ovary mostly 3–8 mm.

monoembryonic.

monoembryonic.

= 44 [66].