Flora of North America species comparison

few, fibrous, 0.3–1 mm wide.

swollen at base into pseudobulb, ± globose, glabrous.

1, at middle or proximal 1/3 of stem, sheathing leaf bases persistent, shredding;

blade ovate-elliptic or oblanceolate, keeled abaxially, 2.4–15 × 1–5.2(–6) cm, apex acute.

1–3(–5), with sheathing base;

blade elliptic, ovate, or lanceolate.

spicate racemes, rachis thick, slightly ridged or fluted, 6–22 cm;

floral bracts triangular to lanceolate, 0.5–1 mm;

pedicels 1.3–1.7 mm.

terminal, racemes, spicate racemes, corymbose racemes, or subumbellate racemes;

floral bracts inconspicuous, lanceolate, subulate, or triangular-acuminate.

40–160, not resupinate, green to yellowish green;

dorsal sepal ovate to elliptic, 1.5–2.8 × 0.8–1.3 mm, apex acuminate;

lateral sepals ovate to elliptic, falcate, 1.5–2.8 × 0.8–1.3 mm, apex acuminate;

petals strongly reflexed, filiform to linear, falcate, 1.3–2 × 0.2–0.3 mm, apex acuminate;

lip suborbiculate-ovate to subquadrangular-ovate, 1.5–2.8 × 1.3–2.2(–2.5) mm, base hastate-auriculate, apex obliquely 3-dentate or retuse with apiculum in sinus;

disc deeply concave, 5-veined;

column 0.2–0.5 × 0.2–0.5 mm;

pollinia yellow.

2–160, resupinate or not, erect or spreading, sessile or minutely to strongly pedicellate;

sepals spreading, distinct or lateral sepals basally connate, ovate, elliptic, or lanceolate, 1–6 mm, margins revolute or not;

petals spreading or recurved, filiform to linear, lanceolate, or triangular, usually much narrower than sepals;

lip ovate or lanceolate, cordate, unlobed to 3-lobed, concave or saccate, widest proximal to middle, base auriculate or truncate;

column free;

anther terminal;

pollinaria 4, waxy; 1 pollinarium or 2 separate hemipollinaria;

viscidia yellow or orange.

capsules; previous year’s fruiting stem and capsules frequently present during current year’s anthesis.

ascending, ellipsoid, 7 × 3 mm.

5–15 mm diam.

= 14, 15, 18, ca. 20, ca. 21, 22.