Platanthera stenophylla Tang & F. T. Wang Acta Phytotax. Sin. 1: 59. 1951.

独龙江舌唇兰 du long jiang she chun lan

Plants 15-17.5 cm tall. Rootstock creeping, cylindric. Stem erect or ascending, rather slender, with 1 tubular sheath at base, 1-leaved. Leaf cauline, narrowly oblong, 4-4.5 × 0.7-0.8 cm, base attenuate and clasping, apex obtuse. Peduncle slender; rachis 3.5-4 cm, laxly 3-5-flowered; floral bracts lanceolate, slightly exceeding ovary, apex acuminate. Flowers green; pedicel and ovary cylindric-fusiform, ca. 8 mm. Dorsal sepal ovate-lanceolate, ca. 6 × 1.8 mm, glabrous, 3-veined, apex obtuse; lateral sepals lanceolate, oblique, 3.5-6 × ca. 1.3 mm, glabrous, 1-veined, apex obtuse. Petals ovate-lanceolate, oblique, ca. 5 × 1.8 mm, slightly fleshy, 1-veined, apex obtuse; lip lanceolate-ligulate, ca. 5 × 1.4 mm, entire, apex obtuse; spur pendulous to spreading horizontally, cylindric, ca. 9.5 × 1 mm, exceeding ovary, tapering slightly toward apex, apex obtuse. Column ca. 1.5 mm. Fl. Aug-Sep.

● Betula forests, grasslands on slopes; 2500-3800 m. SE Xizang (Bomi), NW Yunnan (Gongshan).