Bulbophyllum retusiusculum

Bulbophyllum retusiusculum is a species of orchid in the genus Bulbophyllum.

Description
Bulbophyllum retusiusculum is a warm-growing orchid has lithophytic or epiphytic habits, featuring a creeping branched rhizome with 1-3 cm separations between each falcate pseudobulb. The pseudobulbs are slender, suberect to oblique, and narrowly ovate-conical, each bearing a single apical, leathery, linear-oblong leaf that is erect to suberect and semi-flexible to rigid and 1.6-8 cm long. It flowers in summer and autumn with a 14 cm long basal inflorescence, which can be ascending or descending, bearing 6 to 12 umbel-shaped flowers with tubular, narrowly lanceolate bracts.

Distribution
Bulbophyllum retusiusculum is found in lowland evergreen forests and primary montane forests at elevations of 500 to 3000 meters in China (Gansu, Guizhou, Hainan, Hubei, Hunan, Sichuan, Xizang, Yunnan), Nepal, India (Assam and Sikkim), Bhutan, Burma, Thailand, Malaysia, Laos, Vietnam, and Taiwan.

Taxonomy
Heinrich Gustav Reichenbach described Bulbophyllum retusiusculum in The Gardeners' Chronicle & Agricultural Gazette in 1869.