Plants slender, 350-570 mm; leaves cauline, many, narrowly oblong to linear-lanceolate, acute or attenuate, 35-110 x 6-8 mm. Inflorescences fairly dense, many-flowered; bracts lanceolate, acuminate, to 35 mm long, the lower much exceeding the flowers; ovary straight, subsessile, 10-12 mm long. Flowers green with yellowish-green petals and lip, erect and angled at the ovary then spreading. Median sepal erect, concave, narrowly ovate, acute, c. 5.5 mm long; lateral sepals spreading, lanceolate, acute, c. 5.5 mm long. Petals obliquely narrowly oblong, curved, acute, adherent to the median sepal and as long as it. Lip tripartite, carnose, c. 6 mm long; midlobe erect in front of the gynostemium, subulate, c. 4 mm long, less than 1.5 times the length of the side lobes; side lobes narrowly oblong, c. 3 mm long; spur filiform, shorter than the ovary, 7-11 mm long. Anther truncate, c. 1.7 mm tall, canals vestigial; stigmatic processes clavate, c. 1.7 mm long; central rostellum lobe fleshy, peg-like, obtuse, 1.2-2 5.5-9.5 mm long. Petals simªple, obliquely ovate, acute, curved, 5-8.5 mm long, adhering to the median sepal. Lip tripartite, carnose, 5.8-9.6 mm long; midlobe erect in front of the gynostemium, oblong, obtuse, 3.8-6 mm long, at least 1.5 times as long as the side lobes; side lobes narrowly oblong, 2-4 mm long; spur filiform, longer than ovary, 16-35 mm long. An-ther truncate, c. 2 mm tall, canals to 0.5 mm long; stigmatic processes clavate, c. 1.2 mm long; cenªtral rostellum lobe subulate, c. 1.2 mm long, with a fleshy median crest.
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Lip c. 3.5 mm long, 3-lobed; mid-lobe horizontal, 2.5–3 mm long; side lobes deflexed, 2–2.5 mm long; all lobes linear, 0.1–0.3 mm wide; spur 6–8 mm long, slender, parallel to ovary.
Inflorescence 10–23 × 1–1.8 cm, densely many-flowered; bracts ovate, acute, longer than the ovary, up to 27 mm long at the base of the inflorescence.
Terrestrial herb, up to 400 mm tall. Leaves linear, attenuate, spreading, up to 100 mm long. Spur (4-)6-7 mm long. Lip lobes subequal. Flowers green.
Dorsal sepal 4–5 × 1–2 mm, lanceolate, acute, erect; lateral sepals 3.5–5.5 × 0.8–1.2 mm, lanceolate, acute, projecting forwards or upwards.
Slender terrestrial herb up to 75 cm high, with villous tuber c. 5 cm long.
Stem leafy; leaves 8–18 cm long, 3–7 mm wide, linear, acute, conduplicate.
Flowers green, the petals and lip drying black, the sepals mid-brown.
Petals 4 mm long, lanceolate, lying beside dorsal sepal.
Ovary and pedicel c. 10 mm long.
Stigmatic arms very short.
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