I really happy when to see photo this orchid. So the lost ID orchid from Peninsula Malaysia be able recovery soon. This specimen often labelling as B. hirtulum, but it is wrong, they labelling due just have a little bit similarity and same section from Bulbophyllum section Hirtula. Thanks for Mr. Ahmat Mamat to allow use his photo for determining the right ID. He collected specimen from Perak.
References :
Basionym in J. Fed. Malay States Mus. 4: 66 (1909)
Distribution :
Endemic Peninsula Malaysia
42
Varieties sepals, petals and lip, in Bulbophyllum section Hirtula
 |  |
| Bulbophyllum trichoglottis var. sumatranum J.J.Sm., 1920 | Bulbophyllum trichoglottis Ridl., 1909 |
| Endemic in Sumatra | Endemic in Peninsula Malaysia |
thanks Tun Jang for the corrected ID, var sumatranum looks weird!
Can u help to identify a bulbophyllum species from Kalimantan?