Taking Rest under Anisoptera costata Tree at Koh Chang
The presence of a large evergreen tree like Anisoptera costata near the riverbank areas in Koh Chang has contributed much in the balance of the eco-system. The towering posture of this tree species at the maximum height rated between 40-60 meters makes it hard to ignore whenever you happen to be in the protected rainforest of Koh Chang Island.
Anisoptera costata is a species of plant which belongs to Dipterocarpaceae family. The prominent venation of the leaf blade resembling as ribbed is what makes this tree species got the name costata. This species of tree is not endemic in Thailand or particularly in Koh Chang because Anisoptera costata can be found in evergreen or semi-evergreen lowland forests of indo-Burma, Brunei, Indonesia, Malaysia, Myanmar, Philippines, Singapore, and Vietnam. It is mainly a Southeast Asian tree species. Its trunk is bole straight, long and fluted base. A young Anisoptera costata is differentiated by its smooth bark while the mature one has scaly, deeply fissured bark which is brown in color and with inner bark gritty. It has resinous exudates, gross branches and twigs are densely grouped. Its leaves appear in simple alternate, obtuse apex, rounded base, densely underside and the petriole is hairy with yellow stellate hairs. Its flowers are colored pink and have contorted petals.
It bears winged nut fruits with two longwings and three small and inside its fruit six or more seeds are seen. Its high quality wood is used for furniture, veneer, plywood, construction and ship planking. The fragrant oily-resin is used locally for caulking boats and exported to be processed for paints and lacquers. The mature and grown Anisoptera costata offers solace and home to some endemic birds of the island of Koh Chang. It is nonetheless shady as the crown is covered with grouped leaves. Underneath it, trekkers or by passers can find comfort and rest.