Flora of North America species comparison

few, horizontally spreading, slender, mostly to 0.4 cm diam.

few–several, spreading to descending, mostly to 0.75 cm diam., slender to stout.

persisting through anthesis, basal, sometimes on basal portion of stem, spreading, linear-oblanceolate to narrowly elliptic, to 21 × 2 cm.

, basal, spreading, obovate, 2–5 × 1–2 cm.

rather loosely to very tightly spiraled, 3–4 flowers per cycle of spiral, occasionally 5 or more in very loose spiral;

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

secund to tightly spiraled, 8–10 flowers per cycle of spiral;

rachis glabrous to sparsely pubescent, trichomes capitate to clavate, glands obviously stalked.

ochroleucous, ivory, creamy, yellowish, or greenish white, ascending, urceolate to somewhat gaping, claw of lip at pronounced (20–60°) angle to lamina, base cuneate, appearing strongly inflated;

sepals distinct to base, 6–14 mm;

lateral sepals appressed to petals and lip, straight, separated from dorsal sepal by mostly 0.7–1 mm;

petals linear to linear-oblong, 6–13 mm, apex acute to obtuse;

lip often more yellow centrally, oblong to ovate, 7–12 × 4–7 mm, margins crenulate, glabrous;

veins several, branches parallel;

basal calli incurved, prominent, very rarely conic, 1–2 mm;

viscidia linear;

ovary 3–7 mm.

white;

sepals somewhat spreading, distinct to base, elliptic, 5 × 1 mm;

lateral sepals white throughout, apex acuminate;

petals lanceolate, slightly oblique, 5 × 1 mm;

lip white with green or yellowish green center, ovate to oblong, 5 × 2.5 mm, apex dilated, its margin crisped-crenate, pubescent;

veins obscure;

basal calli erect, short-pointed, mostly to 1 mm;

viscidium linear-lanceolate;

ovary mostly 3 mm.

monoembryonic.

monoembryonic.

= 30.