Description from Flora of China
Phalaenopsis buyssoniana H. G. Reichenbach; P. esmeralda H. G. Reichenbach; P. pulcherrima (Lindley) J. J. Smith.
Leaves 3-6, nearly basal; leaf blade oblong, 5-7.5 × 1.5-2 cm, base with equitant sheaths, apex obtuse or acute. Inflorescence erect; peduncle to 38 cm, 2.5-3 mm in diam., with 3 or 4 sheaths 3-5 mm; rachis 10-13 cm, laxly several flowered; floral bracts ovate, ca. 3 mm. Flowers often fragrant, opening widely, usually with pink sepals and petals and purple lip; pedicel and ovary 1.3-2 cm. Dorsal sepal oblong, ca. 8 × 5 mm, obtuse; lateral sepals slightly oblique, ovate-triangular, ca. 8 × 7 mm; mentum ± conic. Petals subobovate, slightly smaller than dorsal sepal; lip attached at a right angle to end of column foot, 3-lobed, recurved; claw ca. 4 mm, with a square callus adaxially; basal lobes erect on both sides of claw, rectangular, ca. 4 mm; lateral lobes erect, somewhat suborbicular or broadly elliptic, ca. 6 × 6 mm; mid-lobe ligulate, ca. 5 × 2 mm, adaxially with 3 or 4 fleshy lamellae, apex acute. Column ca. 7 mm, foot ca. 6 mm. Fl. Jul-Aug. 2n = 38.
Rocky places or soil-covered rocks in dense forests or thickets. Hainan [Cambodia, NE India, Indonesia, Laos, Malaysia, Myanmar, Thailand, Vietnam].