Flora of North America species comparison

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

few, strongly descending, tuberous, to 1.5 cm diam.

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

persisting into anthesis, basal, often on proximal 1/2 of stem, ascending, linear to linear-lanceolate or oblanceolate, to 15 × 0.9 cm.

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

rachis glabrous.

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

rachis glabrous, commonly minutely and sparsely farinose.

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.

ascending, ochroleucous, yellowish white, and ochraceous (tinged yellowish brown), with basal 1/4 of sepals and petals and to 1/2 of lip green and fleshy, tubular;

sepals connate at base, 4–6 mm;

lateral sepals with apices spreading;

petals lanceolate, apex spreading, obtuse;

lip variably orange centrally, broadly or occasionally narrowly elliptic, 5–6 × 3.8–6.7 mm, often divided by ± evident constrictions into abruptly narrowed apical and basal parts narrower than middle, the apical part minutely but conspicuously puberulent adaxially;

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

viscidia linear to linear-elliptic;

ovary mostly 2–4 mm.

monoembryonic.

monoembryonic.

= 44.