Helixanthera parasitica

India: Tropical and subtropical warm evergreen forests, up to 1800 m altitude, found on restricted number of hosts, i. e. Dillenia sp., Antidesma acidum, Litsea polyantha, Quercus dealbata and Vatica lanceolata. West Bengal, Sikkim, Assam, Nagaland, Manipur, Tripura and Meghalaya; Nepal, Bhutan, Bangladesh, Myanmar, China, Cambodia, Laos, Vietnam, Thailand, Malaysia, Indonesia and Philippines as per BSI flora of India;

Flowering : April,2014
Habit: Parasitic Shrub
Habitat: Tree trunk  (High elevation)
Location: Kaptai forest, Hill Tract, Bangladesh
There are several Loranthus species that can be found in Bangladesh. ID by this single plate is akin to suicide. However, you may check Helixanthera parasitica Lour.
Agree with ... ID. Looks like Helixanthera parasitica Lour. to me too.