| Type | Indigenous |
|---|---|
| Family | Dipterocarpaceae |
| Synonym | Balanocarpus erosa Bedd. |
| Local Name | Eeyakam |
| Local Name 2 | Irumbakam |
| Habit | Large sized tree |
| Botanical Features | Evergreen trees, upto 25 m; bark 6-7 mm thick, pale brown, smooth, blaze pinkish-yellow. Leaves simple, alternate; stipule minute, lateral, deciduous; petiole 5-10 mm, stout, tomentose; lamina 10-20 x 3-7 cm, oblong or oblong-lanceolate, base unequally cordate, apex acute or acuminate, margin entire, glabrous, coriaceous, lateral nerves 10-17 pairs, pinnate, arched, prominent, intercostae reticulate. Flowers greyish-yellow, ; calyx tube short, adnate to the torus; sepals 5, suborbicular, subequal, margin ciliate, reddish, imbricate; petals 5, bilobed, pilose outside, glabrous inside, pinkish-white; stamens 15, rarely 10; filaments dilated at the base; anthers short, ovate; ovary superior, glabrous, 3-celled, ovules 2 in each cell; style short; stigma thick. Fruit a nut, ovoid or oblong, apiculate, enclosed at the base by the thickened and accrescent sepals which often attain 2.5 cm long and spread horizontally. |