Botanical descriptions Habitat and ecology Distribution
|Diagnostic characters :||Deciduous trees, bark smooth, hoped at the base. 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 :||Large deciduous tree up to 45 m height, 1m in DBH. Branches ascending to the main trunk.|
|Trunk & bark :||Trunk straight. Bark smooth, slightly hooped at base, lenticelled, outer bark 1 cm thick, light brown, white wood.|
|Branches and branchlets or twigs :||Twigs terete, glabrous, light brown densely hairy when young, greenish-brown becoming dark brown when dry.|
|Exudates :||Exudate resinous on fruits, white when dry.|
|Leaves :||Leaves paripinnately compound, alternate, rachis 7-15 cm, pulvinate, leaflets 2-3 pairs, opposite, 10 x 5 cm, ovate to elliptic, slightly asymmetric, apex acuminate, base rounded or attenuate, margin entire, blade coriaceous, shiny, glabrous.|
Midrib canaliculated above, prominent below, slightly arched, secondary veins oblique to the midrib, widely parallel, tertiary veins oblique. Petiolule 3-4 mm.
Stipules present, triangular, slightly rounded at base, tip strongly acute, and falling up soon.
|Inflorescences or flowers :||Flowers grouped in terminal or axillary panicles, densely velutinous with fawn hairs. Flowering bud ovoid with small spines on calyx.|
|Fruits :||Fruits are woody pods 6-8 x 3-4 cm, armed with numerous stout spines, dark brown when dry, widely elliptic, with strong and sharp beak at the end; the spines have white resin at their extremity.|
|Seeds :||Seed 1-3, black and glossy.|
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