南方卷瓣兰 nan fang juan ban lan

Ephippium lepidum Blume, Bijdr. 310. 1825; Bulbophyllum obtusiangulum Z. H. Tsi.

Rhizome creeping, ca. 3 mm in diam., rooting from base of pseudobulbs. Pseudobulbs 2-3 cm apart on rhizome, ovoid, 1.5-1.8 cm, ca. 1.3 cm in diam., with a terminal leaf. Petiole ca. 1.5 cm; leaf blade obovate-lanceolate or suboblong, 7-11 × 1.7-2.4 cm, leathery, apex obtuse and retuse. Scape from base of pseudobulb, to 17 cm; umbel 10-flowered; peduncle ca. 1.5 mm in diam., with 2 or 3 sheaths; floral bracts narrowly lanceolate, ca. 3.5 mm, apex acuminate. Pedicel and ovary ca. 6 mm. Flowers yellow. Dorsal sepal broadly ovate, cymbiform, ca. 3.5 × 3 mm, margin fimbriate-ciliate, apex acute; lateral sepals suboblong, ca. 15 × 3 mm, base adnate to column foot, twisted near base, their upper edges connate except apices, apex obtuse. Petals obliquely ovate, ca. 3 × 2 mm, margins fimbriate-ciliate, apex cuspidate; lip recurved, ligulate, ca. 2.5 mm, base attached to end of column foot by a mobile joint, apex acute. Column ca. 2 mm, with suborbicular, enlarged wings at middle; foot ca. 3.5 mm, with free part ca. 1.5 mm. Fl. Apr-May.

Tree trunks in dense forests; ca. 900 m. S Hainan [Cambodia, Indonesia, Laos, Malaysia, Thailand, Vietnam].