大花钗子股 da hua chai zi gu

Stems ascending, to 30 cm, 5-8 mm in diam., rigid, internodes 2-2.5 cm. Leaves 9-18 cm × 2-3 mm, obtuse. Inflorescence ca. 1 cm, often 2- or 3-flowered; rachis stout; floral bracts broadly ovate, ca. 3 mm, fleshy, obtuse. Flowers fleshy, yellowish to yellowish green, tinged or spotted with purplish red or brownish abaxially on sepals and petals, lip epichile brown or dark purple, column yellowish green; pedicel and ovary ca. 9 mm. Dorsal sepal ovate-oblong, 9-12 × 5-6 mm, concave, obtuse; lateral sepals suboblong, 10-12 × 4-5 mm, margin incurved, ± embracing epichile, abaxially carinate-winged and becoming a long winged tail at apex. Petals subelliptic, 10-11 × 5-5.5 mm, obtuse; lip 1-1.3 cm, with a distinct boundary between epichile and hypochile; hypochile smaller than epichile, with lateral lobes on both sides embracing column; epichile cordate, ca. 1 cm wide, adaxially papillate, margin recurved, apex emarginate. Column ca. 5 mm, thick. Fl. Apr-Jul.

● Epiphytic on tree trunks in open forests; 600-1900 m. S Yunnan.