Plants ascending or arching. Stems 2-20 cm, ca. 7 mm in diam. Leaves many, often twisted at base and ± secund; blade terete, 10-19 cm × 2-3 mm, slender, fleshy, adaxially channeled, apex acute. Inflorescence shorter or nearly as long as leaves, 1-6-flowered; peduncle and rachis slender; rachis flexuous; floral bracts deflexed, ovate, ca. 3 mm. Flowers white, often slightly spotted with reddish brown, opening widely; pedicel and ovary 2-2.5 cm, ovary 5-or 6-ribbed. Sepals and petals slightly twisted; dorsal sepal obovate-oblong, ca. 13 × 5 mm, base contracted, apex obtuse; lateral lobes falcate-oblong or obliquely ovate-oblong, ca. 13 × 6 mm, obtuse. Petals oblong, ca. 12 × 4.5 mm, base contracted, apex obtuse; lip spurred, 3-lobed; lateral lobes erect, ca. 5 mm, unequally bilobulate, lower lobule ovate; mid-lobe from deep gap of front wall of spur, spreading, ligulate, 12-15 × 3-5 mm, with 2 or 3 crested basal lamellae, apical margin undulate or crenulate, apex obtuse and retuse or shallowly bilobed; spur funnel-shaped, ca. 2 cm, usually rigid, narrowed toward tip, sometimes ± bent forward. Column ca. 6 mm, foot ca. 1.5 mm. Fl. Oct-Jan. 2n = 38.
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