Epiphytic plant with many fleshy roots ，long ，flexuous ，covered with small wart—like outgrowths.Stem short，enclosed by distichous imbricating leaf base．

Leaves 2 — 4 ，slightly fleshy ，elliptic or obovate—elliptic，acute ，7— 12cm long ，4 ——4．5 cm ，with the apex obliquely acute—obtuse ，base cuneate ，amplexicaul～sheathing.

Inflorescence arising from the base of the stem ，10—1 5 cm long ，rather slender ，erect or arcuate ，simpie or ramified ,cylindrical with flattened rachis ，in zigzag ，laxly with 5 -10flowers ；bracts alternate，distichous ，ovate—lanceolate ，acuminate ，3 — 4 mm long：pedicel and ovary 1．5 — 1．6 cm long．long ，3— 4 mm wide ，apex obtuse；lateral sepals obliquely ovate or ovate—elliptic，about 6.5 mm long ，4．5 mm wide ，apex sub-acute,laterally adnate to the column～foot；petals spatulate or narrowly obovate，5 — 6 mm long，2 — 3 mm wide，apex rounded；lip very fleshy，3 一 lobed，white ，with 2 orange and brownish —tinged conical calli on the disc and central part of the mid—lobe ，as long as the sepals；lateral lobes erect，Iinear，faleate，acuminate，2 — 3 mm long ；mid—lobe movable，broadly triangular，fleshy，concave ，apex rounded ,5 — 6 mm long，6 — 8 mm wide，from a sub—quadrate base，apex acute；disc with a denticulate free callus which is excavated underneath forming a distinct gibbosity，and for—king into four free filiforms about 2 mm long at base．Column 4．5 mm long，winged，base with a foot 1—2mm long ，white with1 or 2 crescent or semi—orbicular brown blotches on ventral base．

Pollinia 4 in two unequal pairs。Flowering in the early Spring．