Dorsal sepal 23–28 × 8 mm, erect, convex; lateral sepals 25–27 × 9–10 mm, deflexed; all sepals with a keeled midrib.
Petals 25 × 7 mm, falcate-lanceolate from a narrow base, adnate to dorsal sepal on inner edge, entire.
Inflorescence c. 15 × 6.5 cm, densely many-flowered; bracts leafy, longer than the flower.
Anther loculi 3.5 mm high, total width 12 mm, 5 mm wide between loculi; canals 4 mm long.
Stigmatic arms 9 mm long; rostellum mid-lobe 1.5 mm high.
Stem leafy; leaves c. 17 × 5 cm, broadly lanceolate.
Robust terrestrial herb up to 75 cm high.
Ovary and pedicel 20–25 mm long.
Flowers semi-erect, greenish.