Flora of North America species comparison

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

solitary, vertical, tuberous, turbinate, mostly to 1 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.

fugacious, 3–5, basal, spreading, oval-oblanceolate, 2–6 × 1–2 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.

loosely spiraled, 4–7 flowers per cycle of spiral;

rachis glabrous.

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, gaping from near middle, tubular portion less than 3 mm;

sepals distinct to base, 5 × 1 mm;

lateral sepals slightly spreading;

petals linear to lance-oblong, 5 × 1 mm, apex acute to obtuse;

lip 5 × 2.5 mm, ovate to oblong, apex dilated with broad crisped, finely lacerate margin;

veins several, branches very short;

basal calli long-pointed, mostly to 1 mm;

viscidium linear-lanceolate;

ovary mostly 3 mm.

monoembryonic.

monoembryonic.

= 44 [66].