Baccaurea polyneura (Syn Baccaurea hookeri) belongs to the plant family Phyllanthaceae. is locally known as pokok jentik-jentik. It is called pokok jentik-jentik due to the nature of the fruits (buah jentik-jentik) which will split open the pericarp when flicked with the second or third finger. Three seeds are usually found in a fruit. The testa of each seed is surrounded by a juicy layer, which contain sour-sweet juice. This juicy substance is eaten with the seeds.
The plant is native to the South East Asia, particularly Peninsular Malaysia and the Indonesian Island of Sumatra. Distribution of the plant extends to Thailand and Borneo island. Pokok jentik-jentik is related to a more common fruit plant locally known as rambai (Baccaurea motleyana), only that the fruit of rambai is about three times larger than the fruit of jentik-jentik.
Cat-eye fruits are included in the above photo for comparison
Rambai (Baccaurea motleyana)