(Baccaurea polyneura)

A portion of jentik jentik tree


Family: Phyllantaceae

Synonyms: Baccaurea cordata, Baccaurea hookeri, Baccaurea kunstleri

Other names: Chum rai, kapul burung.

Jentik jentik is a fruit from South East Asian region.  It grows in Thailand, Peninsular Malaysia and Sumatra.  It mostly grows as a mid-canopy tree of of primary, secondary and swamp rain forests at elevations from 20-600 m asl.

It is called a tree larvae due to the nature of the fruits (fruit wiggler) which will split open the pericarp when flicked with the second or third finger.


Evergreen dioecious tree 11-32 m high, buttresses small; bark brown to white-brown to red-brown when fresh, brown when dry, 3-5 mm thick, smooth; inner bark red to brown, 2-5 mm thick.

Jentik jentik fruits and foliage

Leaves: petiole 7-78 mm long, velutinous, raised glands usually absent; stipules elliptic to ovate, 2.2-10 by 0.5-2 mm, caducous (to late caducous), velutinous outside, subgla-brous to velutinous inside, margin ciliate, not hyaline; lamina ovate to elliptic, 5.5-21.5 by 3.1-12.5 cm, l/w ratio 1.4-2.7, papery to slightly leathery; base rounded to cordate (to attenuate); apex (retuse to) acute, up to 11 mm long; upper surface glabrous to densely hairy, midrib and veins sparsely hairy to velutinous, sometimes granulate; lower surface sparsely hairy to velutinous, raised glands absent to present, discoid glands absent; dark green when fresh, green to brown when dry, black when young when dry; secondary veins 7-14 per side, closed at margin or almost so; nervation scalariform, brown to white-brown when dry.

Staminate inflorescences axillary to just below the leaves (to ramiflorous), solitary to 5 clustered together, 1-7 cm long, c. 1 mm thick, velutinous, many-flowered, flowers clustered at the tip of inflorescence, rarely somewhat scattered; bracts 0 or 3 per branchlet, 0.2-1.3 mm long, persistent, velutinous outside, glabrous to rarely velutinous inside, margin ciliate, not hyaline; branchlets cylindrical to spatulate, 1-4 mm long, velutinous, 3-flowered; staminate flowers 1.1-3.3 mm diam., green to yellow to greenish-white; pedicel 0-0.5 mm long, velutinous; sepals 4-6, ovate, 0.7-1.5 by 0.5-1.5 mm, apex straight, outside and inside velutinous; stamens 4-8, 0.3-0.7 mm long, glabrous, cream to brown; ?laments 0.2-0.6 mm long, geniculate to straight; anthers c. 0.1 by 0.2-0.3 by 0.1 mm; pistillode absent to present, globose, 0-0.3 mm high, velutinous, solid. Pistillate inflorescences axillary to ramiflorous, solitary to 3 clustered together, 1-34.5 cm long, 0.5-4 mm thick, velutinous, 5-50-flowered, yellow; pedicel 2-5.8 mm long, upper part 0.5-2 mm long, geniculate or not, velutinous to sparsely hairy; bracts 0-3 per branchlet, persistent to caducous, velutinous outside, glabrous to velutinous inside, margin ciliate; pistillate flowers 2.5-6.5 mm diam.; sepals 4 or 5, ovate, 0.5-5.9 by 0.3-3.5 mm, outside and inside velutinous, persistent (or caducous), ochre; ovary subglobose to pyriform, 2.5-4.5 by 2.2-4 mm, 3-locular, velutinous; style 0.1-0.2 mm by 0.5-0.8 mm, velutinous; stigmas 0.6-0.9 mm long, cleft for upper 60-90%, persistent or caducous; lobes 0.5-0.9 by c. 0.2 mm, glabrous above, glabrous to sparsely hairy below.

Fruits globose to subglobose, 1-3-seeded, fleshy capsules, 10-26 by 12-26 by 12-26 mm, loculicidally dehiscent, raised glands often present, sparsely hairy to velutinous outside and inside, yellow to orange; pericarp 0.1-4 mm thick; column 9.5-19 mm long, almost straight, persistent; pedicel 5-11(-35) mm long, upper part 1-7 mm long, 80% bent present at abscission zone.

Seeds ellipsoid, laterally flattened, 7.8-11 by 5-9.8 by 2-5 mm; arillode red; testa orange; cotyledons 5-9 by 5-7.5 by c. 0.1 mm; radicle 0.5-2 mm long; endosperm c. 0.5 mm thick.


Gentil gentik fruits are edible.  These are gathered from the wild.  Each fruit usually contains three seeds. The head of the seed is surrounded by a juicy layer of pulp which tastes sweet sour.  This pulp is eaten alongwith the seeds.

Ripe fruits of jentik jentik


The fruits grow wild and are collected from the wild growing trees only.  It is still not cultivated.  The plant can grow on all type of soils.

            New plants can be raised from seed which germinates in 10-20 days.

            As gentik gentik is a dioecious plant, so it has to be ensured while planting that each female tree has a male tree too nearby.

            Gentik gentik tgrees fruit all the year round,