Bulbophyllum rubrolabellum T. P. Lin, Taiwania. 20: 163. 1975.红心石豆兰 hong xin shi dou lan

Bulbophyllum fenghuangshanianum S. S. Ying; B. odoratissimum (Smith) Lindley var. rubrolabellum(T. P. Lin) S. S. Ying.

Rhizome creeping, roots spreading. Pseudobulbs close, green, ovoid, 8-9 mm, 6-7 mm in diam., with a terminal leaf. Leaf sessile; blade oblong, 2.5-3.5 × 0.8-1 cm, leathery, apex acute. Scape from base of pseudobulb, 1-1.5 cm, with 2 or 3 sheaths; raceme shortened, umbel-like, densely 6-8-flowered; floral bracts ca. 2 mm, apex acute. Pedicel and ovary ca. 2.5 mm. Flowers not resupinate, whitish yellow. Sepals free, subequal, ovate, 3.5-4 × 1.6-2 mm, apex acuminate. Petals elliptic, ca. 1.5 × 0.6 mm, apex acute; lip recurved, red, ligulate, ca. 2.8 mm, hinged to end of column foot by a joint, adaxially minutely papillate. Column whitish yellow, short, ca. 1 mm; stelidia narrowly triangular-subulate, ca. 0.6 mm, slender; foot ca. 2 mm. Capsule ellipsoid, ca. 1 cm. Fl. Sep-Oct. 2n= 38*, 58*.

● Tree trunks in forests; 700-1500(-1800) m. Taiwan.