English Lao
Botanical descriptions Habitat and ecology Distribution
| Diagnostic characters : | Large evergreen trees, bole often fluted, bark deeply fissured, scaly leaving a swirling pattern. Exudate resinous. Leaves densely stellately hairy. Stipules free, tomentose. Flower pink, petals contorted. Fruit a winged nut with 2 long wings and 3 small. |
| Habit : | Evergreen tree, 30-40 m. height. |
| Trunk & bark : | Bole straight, long and fluted at base. Young trees have smooth bark while mature trees have scaly, deeply fissured bark, dark brown in color, inner bark gritty. |
| Branches and branchlets or twigs : | Branches gross, terete; twigs densely grouped, tomentose with yellow stellate hairs. |
| Exudates : | Exudate resinous. |
| Leaves : | Leaves simple alternate, 7-15 cm by 4-7.5 cm, obovate, apex obtuse, base rounded, margin entire, underside densely and petiole hairy with yellow stellate hairs. Midrib canaliculated above, prominent below, secondary vein oblique, widely parallel. Stipules present, tomentose, soon falling up. |
| Inflorescences or flowers : | Flowers grouped in terminal or axillary panicles, pendulous with stellate hairs, whitish cream to pink. Pedicel less than 0.5 cm long. |
| Fruits : | The fruit is a nut, 1-1.5 cm. in diameter, globose, acuminate tip with short hairs, two large wings and three small wings, the large wings with three main nerves. |
| Seeds : | Six or more seeds. |