Bulbophyllum hirtulum Ridl. 1900 SECTION Hirtula Ridley 1908
TYPE for the section
Side View of Flower with lip open
Photos courtesy of Rudi Hromniak and his © and his Orchid Webpage
Slight to no 
to
Common Name The Bristly Bulbophyllum [refers to the hairy sepals and petals]
Flower Size 1/8" [3 mm]
Found in Malaysia, Sumatra and Borneo in shrubby forests on limestone hills and in lowland forests on steep sandstone ridges on shrubs and lower branches of trees at elevations of 400 to 1300 meters as a miniature sized, hot to warm growing epiphyte with .18" to .25" [.4 to .6 cm] between each ovoid, slightly compressed pseudobulb carrying a single, apical, thick, elliptic to obovate, medium green, petiolate leaf that blooms in the spring on a basal, 21/4" to 4" [6 to 10 cm] long, 3 to 10 flowered inflorescence with slighly to no scented flowers held in an umbel.
Synonyms Bulbophyllum cincinnatum Ridl. 1903; Bulbophyllum trichoglottis Ridl. 1909; Bulbophyllum trichoglottis var. sumatranum J.J.Sm. 1920
References W3 Tropicos, Kew Monocot list , IPNI ; Flora Of Malaya Vol 1 Orchids Holttum 1953; Orchids of Borneo Vol 2 Vermeullen 1991 drawing/photo fide; The Orchids of Penninsular Malaysia and Singapore Seidenfaden & Woods 1992 drawing fide; A Checklist of the Orchids of Borneo Wood & Cribb 1994; Bulbophyllum and Their Allies Siegerist 2001; Orchids of Sumatra Comber 2001; Orchids of Sarawak Beeman & Wood Beaman etal 2001; Gard. Bull. Singapore 54: 122 J J Verm. 2002 drawing fide; Wild Orchids of the Cameron Highlands REACH 2009 photo fide; The Orchids of Mount Kinabalu Vol 2 Wood, Beaman, Lamb, Chu Lun and Beaman 2011 drawing/photo fide; Bulbophyllum of Borneo J J Verm, P O'Byrne and Lamb 2015 photos/drawing fide;
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