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Plants 70–170 cm. Leaves linear-elliptic to narrowly ovate, 20–120 × 3–11 cm, apex acuminate. Inflorescences erect, to 1 m; bracts narrowly ovate to filiform, 1–3 cm. Flowers many, 1.5–2.5 cm wide; sepals light green, very narrowly elliptic to narrowly obovate, apex acuminate to apiculate; lateral sepals slightly oblique, adnate to column foot; petals spreading, green or green with pink overflush, 13 × 7 mm, broader than sepals; lip red-maroon, concave, saccate, 11–17 × 18–28 mm, slightly to conspicuously 3-lobed, middle lobe apically obtuse, margins undulate, lateral lobes partially enclosing column; disc with erect lamellae; column 7–10 mm. Capsules ellipsoid, to 6 cm.