淡黄花兜被兰 dan huang hua dou bei lan

Plants 13-17 cm tall. Tubers subglobose, 10-15 mm. Stem erect or ascending, with 1 or 2 tubular sheaths at base, 1-leaved. Leaf subbasal, erect-spreading, linear to linear-lanceolate, 9-10 × 0.4-0.6 cm, apex acuminate. Peduncle with 1 small sterile bract above middle; rachis 4-6 cm, densely 9-13-flowered; floral bracts lanceolate, apex acuminate, basal ones exceeding flowers. Flowers not secund, pale yellow to yellowish green, small; ovary and pedicel 5-6 mm. Sepals connivent and forming a hood; hood ca. 4.5 × 4 mm; dorsal sepal erect, oblong, concave, ca. 4.5 × 1.5 mm, 1-veined, apex obtuse; lateral sepals oblong, oblique, ca. 4.5 × 1.5 mm, 1-veined, apex obtuse. Petals appressed to dorsal sepal, oblong, slightly oblique, ca. 4 × 1.4 mm, 1-veined, apex obtuse; lip spreading, obovate, ca. 4 × 2.8 mm, base cuneate, 3-lobed near middle; lateral lobes oblong, ca. 1.5 × 0.7 mm, apical margin irregularly 2- or 3-denticulate, apex obliquely truncate; mid-lobe oblong, ca. 2 × 1 mm, apex notched and forming 2 small teeth; spur pendulous, straight, cylindric-conic, ca. 2.5 mm, stout, ca. 1.2 mm in diam. at base, apex obtuse. Fl. Sep-Oct.

● Humid grassy slopes; ca. 3000 m. NW Yunnan.