| 형태 |
- Inflorescence terminal, raceme, loosely 4- to 6-flowered; floral bracts appressed to ovary, lanceolate, 4?5 × 3?4 mm, apex acute, glabrous. Flowers resupinate, bisexual, fully open, horizontally facing, yellowish brown except labellum; pedicel and ovary diverging, straight, cylindrical, 1.8?4 cm long, apex with a calyculus surrounding the flower; calyculus cupulate, ca. 1 mm tall, margin irregularly denticulate; sepals 3, free, subequal, apex cymbiform, acute, both surfaces glabrous; dorsal sepal 1, oblanceolate, 1.6?1.8 cm × 3.6?3.7 mm; lateral sepals 2, oblanceolate, weakly oblique, 1.6?1.7 cm × 3.4 mm; petals oblanceolate, spreading, 1.7?1.8 cm × 3.7 mm, glabrous, apex obtuse; labellum light purple, base adnate to column to form a tube; tube ca. 5 mm long; distal free part obovate, 1?2.5 cm × 3?7 mm when spread out, weakly 3-lobed, densely pubescent with yellow villous hairs, covering 7 × 2 mm of distal part of labellum; midlobe 3?4 mm long, apex obtuse, margin irregularly erose-undulate; lateral lobes obscure, margin entire; column 11?13 mm long, with apical wings, glabrous; wings with an incision; anther cap white, flat or slightly depressed, ca. 2 mm wide, dorsally fused with column; pollinia 2; stigma obdeltoid, ca. 1 mm wide, pubescent with short hairs.
- Fruit capsules, erect, cylindrical, 3?4 cm long, 3-locular, black, shiny.
- Stem erect, slender, above-ground portion unbranched, with 4?6 sheaths, light green or yellowish brown at anthesis, black and hardened when fruiting. Sheaths below middle portion of stem sessile, alternate, lanceolate to oblanceolate, base clasping stem, 1.1?1.2 cm long.
- Roots horizontally elongate, wavy, more than 10 cm long. Rhizome horizontal at base, with numerous roots, gradually ascending or erect; ascending portion 2?9 cm long, branched, without roots; sheaths ovate-lanceolate, 0.6?1.3 cm × 5?7 mm, margin ciliate, both surfaces glabrous.
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