English Lao
Botanical descriptions Habitat and ecology Distribution
| Diagnostic characters : | Deciduous or evergreen trees, bark smooth to slightly fissured. Exudate resinous. Leaves compound, rachis swollen at the base. Flowers in panicles, yellow-green, bisexual. Fruit an ovoid-round spiny, flattened pod often with blobs of white resin. |
| Habit : | Deciduous or semi-evergreen tree up to 25 m tall. |
| Trunk & bark : | Bole straight, bark dark brown, smooth or slightly fissured. |
| Branches and branchlets or twigs : | Twigs terete, glabrous. |
| Exudates : | Exudate resinous on fruits. |
| Leaves : | Leaves compound, paripinnate, alternate and spiral, leaflets ovate to elliptic, 2-3 pairs, apex acuminate to rounded, base rounded, margin entire. Midrib flat above, secondary veins oblique, widely parallel, tertiary veins reticulate. Lowest pair of veins with 2 small glands. Stipules curved, falling off early. |
| Inflorescences or flowers : | Flowers arranged in a many-flowered inflorescence, terminal, or in the upper axils, bisexual, pedicels longer than 0.5 cm. |
| Fruits : | Fruit up to 8 cm long, woody, flat, pod spiny, with resin drops at the curved tips. |
| Seeds : | Seed(s) 1-3. |