An epiphytic herb.. Stem covered in persistent leaf-sheaths, producing many long roots at the nodes, 2–8 cm. long.. Leaves 3–8, broadly oblong-elliptic or obliquely ovate-elliptic, unequally and subacutely bilobed at apex, margin undulate, thinly coriaceous, sheath 4–10 mm. long, lamina 6–21 cm. long, 1.5–7 cm. broad.. Inflorescence laxly 2–6(–12)-flowered, deflexed or pendulous; peduncle and rhachis 3–9 cm. long; bracts triangular-ovate to ovate, obtuse, the upper closely appressed to the pedicellate ovary, 2–5 mm. long.. Flowers scented of Lily-of-the-Valley (Convallaria majalis), with translucent white tepals, flushed and veined pale green; lip white with dark green disc and veins, with a chocolate-brown to purple area at the spur-entrance. Spur greenish brown to reddish pink; column pale green; anther cream or pale greenish yellow; pedicellate ovary curved, 10–12 mm. long. Sepals and petals acute or apiculate.. Dorsal sepal oblong-elliptic, 20–23(–25) mm. long, 5.5–7 mm. broad; laterals narrowly elliptic or oblong-elliptic, slightly curved, 22–25 mm. long, 6–7 mm. broad.. Petals oblong or oblong-elliptic, 18–23 mm. long, 6.5–10 mm. broad.. Lip ovate in outline, entire, infundibuliform, margin undulate, erose, retuse to emarginate, with a mucro in the sinus, 2–2.7 cm. long, 2–2.5 cm. broad.. Spur conical at base, constricted at middle, the distal portion abruptly dilated, laterally compressed and geniculate, obtuse, 2–2.5 cm. long.. Column 8–10 mm. long, 6–7 mm. broad; anther 4 mm. long, 3 mm. broad.. Pl. 7. Fig. 145.
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Lip white with green centre and chocolate blotch at base.