齿瓣鸢尾兰 chi ban yuan wei lan

Oberonia regnieri Finet.

Stem 1-2 cm. Leaves subbasal, 3-7, distichous-equitant, laterally compressed, ensiform, sometimes slightly falcate, 5-15 × 1-1.5(-2) cm, thick, veins obscure, base articulate, apex shortly acuminate or obtuse. Peduncle subcylindric or slightly compressed, 10-28 cm, lower part with narrow wings on both sides, including wings 2.5-4 mm wide, with several to many very small sterile bracts; rachis 7-18 cm, many flowered; floral bracts suboblong-ovate, 1.4-1.8 mm, margin irregularly dentate or erose. Flowers laxly arranged, borne 2-3 mm apart from each other, whitish green; pedicel and ovary 1.2-1.4 mm. Dorsal sepal broadly ovate, 1-1.3 × ca. 1 mm, apex obtuse; lateral sepals ovate, ca. 1.2 × 0.8 mm. Petals subovate, ca. 1.2 × 0.8 mm, margin erose; lip subovate in outline, ca. 1.5 mm, inconspicuously 3-lobed; lateral lobes at base of lip, margin erose or inconspicuously incised; mid-lobe apex bilobed; lobules suboblong, ca. 0.6 mm, margin and apex irregularly toothed. Column erect, short. Capsule obovoid-ellipsoid, ca. 4 × 2.5 mm; fruiting pedicel ca. 1.5 mm. Fl. and fr. Oct-Dec.

Epiphytic on trees or lithophytic on rocks in forests; 500-900 m. Hainan, S Yunnan [Bangladesh, Laos, Myanmar, Thailand, Vietnam].