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Petals 2-lobed ± to base; upper lobe erect, 10.5–12.5 × 0.7 mm, narrowly linear; lower lobe 30–50 mm long, c. 3 mm wide at base, horn-like, curving up.
Dorsal sepal erect or reflexed, c. 11 × 6 mm, elliptic, obtuse; lateral sepals deflexed, rolled lengthwise, 13–14 × 7–10 mm, obliquely semi-orbicular.
Leaves 8–12, the lowermost reduced to sheaths, the mid-stem leaves spreading, 16–20 × 5–7 cm, lanceolate or oblanceolate, acute or acuminate.
Stigmas porrect or slightly incurved, 6–7 mm long, slender, enlarged at apex.
Anther erect, 5 mm high; canals 8–11 mm long; auricles oblong, rugulose.
Ovary and pedicel straight or slightly curved, 2.5–3 cm long.
Inflorescence 17–39 × 6–10 cm, fairly densely many-flowered.
Flowers suberect or spreading, green and white.
Rostellum mid-lobe c. 3 mm long.
Terrestrial herb 40–65 cm tall.
Stem leafy.
