曲萼石豆兰 qu e shi dou lan

Bulbophyllum devangiriense N. P. Balakrishnan; B. monanthum (Kuntze) J. J. Smith (1912), not B. monanthos Ridley (1896); B. tiagii A. S. Chauhan; B. uniflorum Griffith (1851), not Hasskarl (1844); Phyllorkis monantha Kuntze; Sarcopodium uniflorum Lindley.

Rhizome stout, ca. 5 mm in diam., rooting at nodes. Pseudobulbs 6-8 cm apart from each other, cylindric, 3-4 cm, ca. 5 mm in diam., with a terminal leaf. Leaf subsessile; blade oblong, 18-24.5 × 3.4-5.5 cm, fleshy or thickly leathery, apex obtuse. Scape flattened, arising from nodes of rhizome, pendulous, 5-8 cm, terminating in a solitary flower; floral bracts ovate, much shorter than pedicel and ovary, apex acute. Flowers thickened, erect, pale yellow spotted with red, except purple-red mid-lobe of lip. Dorsal sepal elliptic, concave, 12-15 × ca. 7 mm, apex obtuse; lateral sepals obliquely ovate-triangular, ca. 7 × 6 mm, contracted and twisted above middle, base adnate to column foot forming a broad mentum, apex obtuse. Petals oblong-lanceolate, ca. 8 × 3 mm, margin entire, apex subacute; lip erect, 2-2.5 mm, basal half subsquare, cordate at base, connected to end of column foot by a mobile joint, near middle 3-lobed; lateral lobes erect, their apices ca. 6 mm apart; mid-lobe deltoid, apex obtuse-rounded. Column stout; foot upcurved, ca. 1 cm, with free part ca. 2 mm; stelidia inconspicuous; anther cap nearly subspherical. Fl. Nov.

Tree trunks in forests; ca. 1400 m. S Yunnan [Bhutan, NE India, Myanmar].