Carambola

carambola Averrhoa carambola, a small tree or shrub thought to be native to Java or other parts of Indonesia, and perhaps also Sri Lanka. It is cultivated in SE Asia, India, and Sri Lanka; and to a lesser extent in other tropical countries. It bears an elongated yellow-green fruit up to 13 cm (5") long which has five prominent ridges running down it so that a cross-section is star shaped. Hence the alternative name starfruit.