兜蕊兰 dou rui lan

Plants 8-21 cm tall. Tuber globose, 5-8 mm in diam. Stem erect, slender, with 2 tubular sheaths and 1 leaf at base. Leaf narrowly elliptic to oblong-spatulate, 3-9 × 0.8-2 cm, apex obtuse. Rachis 2.5-9 cm, 6-20-flowered; floral bracts ca. 1 mm, apex subtruncate. Flowers yellowish green or green; ovary and pedicel 4-4.5 mm. Dorsal sepal erect, broadly ovate, concave, 1-1.2 × 0.9-1.1 mm, 1-veined, entire, apex obtuse or subacute; lateral sepals parallel to lip, pendulous, obliquely elliptic, ca. 2 × 1 mm, entire, lower margins connivent with each other, 1-veined, apex obtuse. Petals erect, oblique, broadly ovate, unequally sided, concave, large, ca. 1.5 × 1.3 mm, apex obtuse; lip linear-ligulate, small, 1.2-1.8 mm, base slightly dilated and ca. 0.7 mm wide, apex obtuse; connective ca. 1 mm wide. Fl. Jul-Aug, fr. Sep.

● Alpine forests, damp alpine grasslands; 1600-3900 m. Gansu, Guizhou, Qinghai, Shaanxi.