Description from Flora of China
Herminium angustifolium (Lindley) Ridley var. souliei Finet, Rev. Gén. Bot. 13: 518. 1901; H. limprichtii Schlechter; H. souliei var. lichiangense W. W. Smith; Monorchis limprichtii (Schlechter) O. Schwarz; M. souliei (Finet) O. Schwarz.
Plants 12-40 cm tall. Tubers oblong-ellipsoid, 10-20 × 6-10 mm. Stem with 2 or 3 tubular sheaths at base, 2-4-leaved. Leaves basal and subopposite or cauline, widely spaced and alternate, narrowly oblong, 4.5-20 × 0.5-2 cm, apex acute. Inflorescence 8-25 cm; peduncle cylindric, with 1 or 2 lanceolate sterile bracts 0.5-2.4 cm; rachis 4-12 cm, subdensely many flowered; floral bracts ovate-lanceolate, 2-5 mm, shorter than ovary, apex acuminate. Flowers erect or horizontal, pale green; ovary straight to slightly arcuate, 4-5 mm including pedicel. Dorsal sepal erect, ovate, concave, 2.5-3 × ca. 2 mm, 3-veined, apex obtuse; lateral sepals spreading, ovate, oblique, ca. 3.5 × 2.5 mm, 1-veined, apex obtuse. Petals erect, linear, 2.5-3 × ca. 0.6 mm, 1-veined, apex obtuse; lip pendulous, narrowly oblong, 3.2-4.5 × 0.8-1.2 mm, slightly contracted at middle, base slightly dilated and shallowly concave, furcately 3-lobed toward apex; lateral lobes linear-falcate, incurved, 1-2 mm; mid-lobe oblong-lanceolate to obtusely triangular, ca. 0.5 mm, apex obtuse. Column ca. 1 mm; pollinia ovoid; viscidia ovoid. Fl. Jul-Aug.
This species is clearly closely allied to Herminium lanceum, though the typically longer lateral lobes of the lip in the latter give its flowers a more spidery appearance.
● Broad-leaved forests, coniferous forests, grassy slopes; 1400-4200 m. W Sichuan, SE Xizang, NE and W Yunnan.