Stem climbing, 6-20 m, ca. 1 cm in diam., swollen noded, with internodes 6-10 cm. Leaf blade elliptic, 18-23 × 5-10 cm; petiole 1-1.5 cm, base amplexicaul. Inflorescence 10-20 cm; floral bracts broadly elliptic or elliptic, concave, 7-12 mm, thickened, obtuse at apex. Flowers white, tinged with greenish. Sepals and petals lanceolate, 14-20 × 4-6 mm; lip 2-2.5 × ca. 1.5 cm, basally connate for ca. 3/4 length to both sides of column forming a tube, apex inconspicuously 3-lobed; lateral lobes broad, margins incised; mid-lobe with dense, fimbriate hairs near apex; disk with scaly appendages. Column ca. 2 cm. Fl. Apr-May.
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