English Lao
Botanical descriptions Habitat and ecology Distribution
| Diagnostic characters : | White irritant sap turning rapidly blackish. Flowers bisexual. Fruit a drupe. |
| Habit : | Evergreen tree up to 15 m tall. |
| Trunk & bark : | Straight trunk. Bark flaky, whitish grey, reddish, outer bark dark red, inner bark light reddish. |
| Branches and branchlets or twigs : | Young branches and twigs terete, puberulent, adult ones glabrous. |
| Exudates : | Exudates copious, white irritant sap rapidly turning black. |
| Leaves : | Leaves simple and spiral 6-15 by 2- 4.5 cm, elliptic or oblong, apex acute, base cuneate and slightly attenuate. Petiole flat, glabrous. Margin entire, undulate. Midrib raised above, primary vein single, secondary veins oblique, 11-15 pairs, tertiary veins reticulate on both surfaces. Stipules absent. |
| Inflorescences or flowers : | Flowers in panicle terminal or axillary, bisexual, pedicel short, bract and bracteole caducous. |
| Fruits : | Fruit a drupe of 3 - 4 x 2 cm, globose, shortly stipitate, greenish-yellow when young and glabrous when ripen. |
| Seeds : | Seed 1. |