球花石豆兰 qiu hua shi dou lan

Bulbophyllum poilanei Gagnepain.

Pseudobulbs close, subovoid, very small, ca. 5 mm, ca. 7 mm in diam., with a terminal leaf. Leaf blade obovate-lanceolate, 11-12 × 0.7-1.7 cm, nearly fleshy, narrowed toward base, base with a few tubular sheaths, apex obtuse. Scape from base of pseudobulb, short; raceme shortened, globose, 4-5 mm, densely many flowered; floral bracts ovate-triangular, very small, ca. 1 mm, apex acute. Pedicel and ovary ca. 2 mm. Flowers purple. Dorsal sepal ovate, ca. 3.5 × 2 mm, 3-veined, entire, obtuse; lateral sepals subequal in size to dorsal sepal, obliquely ovate, 3-veined, their lower edges connate to each other, apex obtuse. Petals truncate to rounded, ca. 2.2 × 1.2 mm, 1-veined, margins glabrous to erose, apex obtuse; lip reflexed, ligulate, fleshy, with a basal groove, adaxially ± papillate, base attached to end of column foot by a mobile joint, apex obtuse. Column stout; stelidia subfalcate; anther cap ± mucronate at apex. Fl. Mar.

Tree trunks in dense forests; 500-600 m. Hainan [India, Vietnam].

Bulbophyllum cylindricoides W. H. Chen & Y. M. Shui (Seed Pl. Karst Region China 1: 217. 2006) belongs here but was not validly published because no Latin description or diagnosis was provided and no type was indicated (Vienna Code, Art. 36.1 and 37.1).