Plants fairly robust, 220-830 mm; leaves cauline, many, suberect, lanceolate to linear-lanceolate, acute, 80-180 mm long. Inflorescences dense, many-flowered; bracts lanceolate, acute, glandular-pubescent, to 25 mm long; ovary with pedicel curved, pedicel 10-17 mm long, ovary 12-16 mm long. Flowers white with green ovary, tips of the perianth lobes and stigmas. Median sepal elliptic, obtuse, 4.5-6.5 mm long; lateral sepals semi-obovate, 6-8 mm long. Petals deeply bipartite; upªper lobe erect, linear-oblanceolate, acute, puªberulous, 4-7 mm long; lower lobe spreading, ovate to lanceolate, ciliolate, 2.5-8 mm long. Lip tripartite from near the base, porrect; midlobe longer and narrower than the side lobes, oblong-linear, obtuse, 7-10 (-12) mm long; side lobes elªliptic to elliptic-lanceolate, obtuse, 5-9.5 mm long; spur incurved, slightly inflated in the apical half, 23-43 mm long. Anther reflexed, 3-4 mm tall, canals upcurved, touching throughout their length, c. 2 mm long; stigmatic processes porrect, clavate, 2-3.5 mm long; central rostellum lobe subulate, c. 2.5 mm long.
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Terrestrial herb, geophyte, slender to robust, 0.35-0.83 m high; with globose root tubers. Leaves many, cauline, elliptic, up to 180 x 22 mm. Inflorescence lax, racemose; flowers up to 60, resupinate, sepals green, petals and lip white. Sepals unequal; median sepal, 4-6 mm long; lateral sepals with apiculus. Petals divided, spreading; lower anterior lobes broadly ovate-lanceolate, 2.5-5.0 mm long, shorter than posterior lobe. Lip 3-lobed, midlobe 7-15 mm long, 2 side lobes shorter, broader; spur 20-40 mm long, slightly curved. Flowering time Feb., Mar.
Robust, tuberous geophyte to 70 cm. Leaves many, cauline, lanceolate. Flowers in a fairly dense raceme, green and white, petals bipartite with anterior lobe elliptic, lip tripartite with spur 20-40 mm long, stigmas 2-4 mm long.
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