Bulbophyllum atratum J.J.Sm. 1917 SECTION Hirtula Ridley 1908


Photos by Peter O'Byrne and The Swiss Orchid Foundation at the Jany Renz Herbaria Website

Part shade Warm cool

Common Name The Flat Black Bulbophyllum

Flower Size .08" [2 mm]

Found in Malaysia, Sumatra and Borneo in montane forests at elevations around 1000 meters as a miniature sized, warm to cool cold growing epiphyte with clustered, ovoid pseudobulbs carrying a single elliptic to ovate, obtuse, petiolate base leaf that blooms on a pendulous, peduncle 10 to 13.2" [25 to 33 cm] long, elongate, rachis 2.8 to 6.6" [9.5 to 16.5 cm] long, swollen, approx. cylindrical, tapering at both ends, 14 to 20" [35 to 50 cm] long overall, densely, simultaneously many, 8 to 40 flowered inflorescence with triangular, acuminate shorter than the ovary floral bracts .


References W3 Tropicos, Kew Monocot list , IPNI ; Orchids of Sumatra Comber 2001; Orchids of Sarawak Beeman & Wood Beaman etal 2001 as B aff atratum; Gard. Bull. Singapore 55: 292 J J Verm & P O'Byrne 2003 ; Gard. Bull. Singapore 54: 131 J J Verm. 2002 drawing/photo fide; Bulbophyllum of Borneo J J Verm, P O'Byrne and Lamb 2015 photos/drawing fide;