二叶盔花兰 er ye kui hua lan

Gymnadenia spathulata Lindley, Gen. Sp. Orchid. Pl. 280. 1835; Aorchis spathulata (Lindley) Vermeulen; A. spathulata var. foliosa (Finet) Soó; A. spathulata var. wilsonii (Schlechter) Soó; Galearis diantha (Schlechter) P. F. Hunt; Galeorchis diantha (Schlechter) Soó; G. reichenbachii Nevski; G. spathulata (Lindley) Soó; G. spathulata var. wilsonii (Schlechter) Soó; Habenaria spathulata (Lindley) Bentham; Orchis diantha Schlechter; O. spathulata (Lindley) H. G. Reichenbach ex Bentham (1881), not Linnaeus (1781); O. spathulata var. foliosa Finet; O. spathulata var. wilsonii Schlechter; Ponerorchis diantha (Schlechter) Soó.

Plants 8-15 cm tall. Rhizome slender. Stem with 1 or 2 tubular, somewhat membranous sheaths at base, (1 or)2(or 3)-leaved. Leaves subopposite, narrowly spatulate-oblanceolate, narrowly spatulate, or elliptic, 2.3-9 × 0.5-3 cm, base gradually attenuate into a long conduplicate sheath, apex obtuse-rounded to acute. Inflorescence 4-10 cm, slender to slightly fleshy; rachis to 2 cm, with 1-5 often secund flowers; floral bracts spreading, suboblong to narrowly elliptic-lanceolate, apex obtuse or acute, basal one often equal to or longer than flower. Flowers spreading, purple, medium-sized to relatively large; ovary fusiform, 7-9 mm including pedicel. Sepals rose-purple, suboblong, 7-10 × 2.5-4 mm, subequal in length, apex obtuse; dorsal sepal erect, concave, 3(or 5)-veined; lateral sepals spreading, slightly oblique, 3-veined. Petals erect, forming a hood with dorsal sepal, purplish pink, ovate-oblong to broadly oblong, 6.5-8 × 2.5-3.5 mm, 3-veined, apex obtuse; lip simple, oblong, elliptic, ovate, or subsquare, 8-11 × 4-6.5 mm, longer than petals, base narrowed into a short claw, spurred, margin entire to slightly undulate, apex obtuse-rounded or subtruncate; disk purplish pink, spotted with dark purple, papillose; spur straight, cylindric, short, ca. 2 mm, much shorter than ovary, stout. Fl. Jul-Aug, fr. Jul-Sep.

Open forests, scrub, alpine meadows, roadsides; 2300-4300 m. SE Gansu, NE Qinghai, Shaanxi, W Sichuan, E and S Xizang, NW Yunnan [Bhutan, India, Nepal].