Leaves: blade with lateral veins and sometimes midrib prominently to faintly bordered with bands of white, gray, or paler green tissue frequently merging, giving leaf rather blotched appearance, especially near margins and apex where veins are closer together, infrequently uniformly green or with only midrib whitened, narrowly elliptic to ovate, 1.4–5.5 × 0.9–2.6 cm, apex usually acute. Inflorescences densely to loosely spiraled or secund, 5–72-flowered; peduncle 6–23 cm. Flowers: lateral sepals 3.8–6 mm; petals connivent; hood 3.9–7.1 mm; lip deeply concave to saccate, 3–5.5 × 1.2–3.1 mm, apex spreading or recurved, blunt or acute, inner surface with 2 or 4 unequal rows of glandular papillae; anther erect, base 0–1/3 immersed in shallowly concave to cup-shaped clinandrium, apex apiculate to acuminate; pollinia acute or short-acuminate; rostellar beak 2-pronged, 0.6–1.7 mm, equal to or longer than body of stigma; viscidium elliptic. 2n = 45, 60.
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