Plants erect, 17–32 cm. Leaves 2 (–3, very rarely), on middle half of stem, alternate to subopposite, wide-spreading; blade elliptic-lanceolate to lance-ovate or ovate-suborbiculate, 6–12 × 3–7 cm. Flowers solitary; sepals white to yellowish or greenish with brownish or tan markings; dorsal sepal obovate to ovate, 15–23 × 9–18 mm; petals spreading, same color as sepals, acuminate-subpandurate to acuminate-pandurate (constricted near middle), flat, 10–14 × 5–8 mm, much shorter than lip, margins undulate-revolute; lip similarly colored, oblance-fusiform to oblance-ovoid, 17–32 mm; orifice basal, 10–22 mm; staminode oblong-quadrangular to broadly ellipsoid or ovoid. 2n = 20.
Home