Bulbophyllum delitescens Hance J. Bot. 14: 44. 1876.

直唇卷瓣兰 zhi chun juan ban lan

Cirrhopetalum delitescens (Hance) Rolfe.

Rhizome creeping, stout, ca. 4 mm in diam., often branched, rooting. Pseudobulbs 3-11 cm apart on rhizome, ovoid or subcylindric, 1.7-3.5 cm, 5-10 mm in diam., with a terminal leaf. Petiole 2-3 cm; leaf blade oblong, elliptic, or obovate-oblong, 16-25 × 3.5-6 cm, leathery, apex obtuse or shortly acute. Scape from base of pseudobulb, erect, 10-22 cm; umbel often 2-4-flowered; peduncle ca. 1.5 mm in diam., sparsely with 3 tubular sheaths ca. 1 cm; floral bracts lanceolate, 4-6 mm, apex aristate. Pedicel and ovary ca. 1 mm. Flowers purple. Dorsal sepal ovate, cymbiform, ca. 10 × 3 mm, apex truncate and emarginate, in sinus with an awn ca. 7 mm; lateral sepals narrowly lanceolate, ca. 60 × 2 mm, base adnate to column foot, twisted near base and connate along their upper and lower edges forming a tube, apex long acuminate. Petals falcate-lanceolate, 5-7 × 1.5-2 mm, apex truncate to emarginate, in sinus with 1 short thread centrally; lip recurved, ligulate, ca. 5 mm, fleshy, base grooved, attached to end of column foot, immobile, apex obtuse. Column ca. 3 mm, with wings dilated at its base; foot ca. 5 mm, with free part ca. 3 mm; stelidia ca. 3 mm, apex sharply bidentate. Fl. Apr-Nov.

Rocks along streamsides or valleys, tree trunks in forests; 1000-2000 m. S Fujian, E and S Guangdong, Hainan, SE Xizang, NE, S, and W Yunnan [NE India, Vietnam].