Family: Euphorbiaceae

Bengali/vernacular name: Gewa, Goa, Goria.
English name: Blinding Tree, River poison.

Description of the plant:
A small, bushy, evergreen tree, often shrubby, with copious milky juice. Leaves thickly coriaceous, 5-10 cm long, elliptic, acuminate. Flowers minute, yellowish-green. Male flowers sessile, in numerous catkin-like spikes, 2.5-5 cm long. Female flowers few, in racemes, 1.3-2.5 cm long. Capsule very variable in size, 6-25 mm across.

Using information:
The plant is poisonous; latex is very acrid and injurious to the eyes; locally applied to ulcers and leprous sores. A soft reddish substance called "Tejbul" obtained from the lower part of the trunk and roots is aphrodisiac. Bark is purgative and emetic. Leaf juice boiled in oil is applied in rheumatism, leprosy and paralysis; decoction of the leaves is used in epilepsy and ulcers (Yusuf et al. 2009).


Chemical constituents:
Latex contains alcohols - exocarol, agalocol, isoagalocol and mannitol; β-amyrin and its 3-epimer, β-amyrenone, cycloartenol and an unknown compound. Leaves contain epitaraxerol. Twigs and bark contain a piscicidal compound which is toxic to Cryzias latipes (fish) at 0.003ppm after 24 hrours (Asolkar et al., 1992; Rastogi & Mehrotra, 1990).

Sundarbans and other coastal forests of Bangladesh.