Flora of North America species comparison

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

numerous, mostly to 1 cm diam., stout.

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 or persisting through anthesis, to 3–5, cauline, reduced to sheathing bracts upward on stem, spreading, linear-lanceolate, keeled, 5–15 × 0.5 cm, rigid.

spikes loosely to tightly spiraled, usually no more than 180°, 5–9 flowers per cycle of spiral, sometimes secund;

rachis sparsely pubescent, some trichomes capitate, glands obviously stalked.

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.

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.

mostly horizontal, strongly gaping, white to cream;

sepals distinct to base, lanceolate, tapering in distal 1/3, (8–)9–10 × 2–3 mm;

lateral sepals widely spreading;

petals linear, slightly falcate, 7–9 × 2–2.5 mm;

lip yellow centrally, ovate in general outline, base rounded-dilated, apical portion descending, oblong, 8–11 × 4 mm, apex recurved with margin crisped;

basal calli erect, tapered, to 1 mm;

viscidium linear-lanceolate;

ovary mostly 7 mm.

monoembryonic.

monoembryonic.

= 44 [66].