茎花石豆兰 jing hua shi dou lan

Rhizome creeping or straggling, stout, 3-4 mm in diam., branched, covered with scalelike sheaths, roots spreading. Pseudobulbs 4-12 cm apart from each other, cylindric or narrowly ovoid, 2-5 cm, 7-10 mm in diam., with a terminal leaf. Petiole 5-15 mm; leaf blade oblong, 5-10 × 1.4-2.7 cm, leathery, apex obtuse and slightly emarginate. Scape from node of rhizome or base of pseudobulb, erect, nearly as long as pseudobulb; raceme shortened, umbel-like, often 3-5-flowered; peduncle ca. 1 mm in diam., with several tubular sheaths; floral bracts ovate-lanceolate, ca. 4 mm, apex acute. Pedicel and ovary ca. 4 mm. Flowers small, yellowish green. Sepals free, subequal, narrowly lanceolate, 7-10 × ca. 1.5 mm, apex acuminate-caudate. Petals lanceolate, 5-7 × ca. 1.2 mm, entire, acuminate; lip attached to end of column foot by a mobile joint, lanceolate, 3-4 mm, grooved at adaxial base, apex acuminate. Column ca. 0.6 mm, foot ca. 2 mm, with free part ca. 0.5 mm; stelidia fusiform, ca. 1 mm; anther cap subglobose, apex mucronate. Capsule ovoid, ca. 1 cm, ca. 4 mm in diam. Fl. Jun-Jul, fr. Nov. 2n = 42.

Tree trunks or rocks in broad-leaved forests; 800-1800 m. SE Xizang [NE India].