Didymoplexiopsis khiriwongensis Seidenfaden, Contr. Orchid Fl. Thailand 13: 13. 1997. 

 拟锚柱兰 ni mao zhu lan 

 Didymoplexiella hainanensis X. H. Jin & S. C. Chen.

 Plants slender, 5–16 cm tall. Rhizome fusiform or moniliform, 50–60 mm, 3–10 mm in diam. Stem 5–15 cm, with 2 or 3 scalelike sheaths, brown; sheaths 1.5–2.5 mm. Rachis 0.7–0.9 cm, densely 2–4-flowered; floral bracts triangular-lanceolate, 1.5–2 mm, apex acute. Flowers spreading, pale yellowish white; pedicel and ovary 0.5–1.5 cm, brown. Dorsal sepal and petals ovate-elliptic, 7–13 × 3–5 mm, united only at very base, apex obtuse; lateral sepals ovate-elliptic, 10–13 × ca. 4 mm, connate with each other for up to 1/3 of their length, and with petals only at their very base, apex obtuse; lip cuneate, 5–6 × 11–12 mm, articulate at joint with column foot, margin undulate; disk with irregular papillose calli at base and at apex. Column ca. 2 mm, dilated at apex, column wings narrow and extending into decurved stelidia; each stelidium 2.5–3 mm; column foot deflexed, elongate, 4–5 mm, adnate with lip, with red blotches. Fl. Mar.

 Humid evergreen forests; 700–800 m. Hainan [Thailand, Vietnam].