Microcoelia megalorrhiza (Rchb.F.) Summerh.

An epiphytic plant.. Stem up to 35 mm. long, 3–4.5 mm. in diameter.. Roots long, mostly few, terete, distinctly verrucose, up to 30 cm. long, 1.5–2.5 mm. in diameter.. Inflorescences erect or pendulous, spreading, up to 130 mm. long, up to 10 simultaneously, each with up to 20 flowers; peduncle up to 10 mm. long; rhachis straight to indistinctly flexuose, terete and slightly excavated; bracts sheathing, acute, 2 mm. long.. Flowers up to 12 mm. long, whitish with base of tepals and apex of spur fading to salmon-pink; pedicel up to 2 mm. long; ovary 3–3.9 mm. long.. Dorsal sepal narrowly elliptical to narrowly oblong, acuminate with slightly bulging area, 5.7–7 mm. long, 1.8–2.4 mm. wide; lateral sepals slightly asymmetric, narrowly oblong, acuminate, 6.6–8.7 mm. long, 1.6–2.4 mm. wide.. Petals narrowly elliptic, acuminate, apex slightly erose, 5.6–7.4 mm. long, 1.8–2.4 mm. wide.. Lip large, subspathulate, obscurely 3-lobed; mid-lobe deeply concave, ovate, acuminate, apically erose; side lobes narrow, oblong, thickened towards spur-mouth, 6.5–8.1 mm. long, 2.2–3.5 mm. wide.. Spur cylindrical, semicircularly curved, tapering to an obtuse apex, 6.2–7.5 mm. long, 0.7–1 mm. in diameter.. Column with a central trigonal pillar-like thickening, 1.8–2.7 mm. long.