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Botanical descriptions Ecology Distribution Literatures
| Habit : | Trees up to 5 m tall. |
| Branches and Branchlets : | Branchlets flat, minutely pubescent. |
| Leaves : | Leaves simple, opposite with opposite, decussate, unequal pairs; stipule caducous; petiole to 1.5 cm long, terete, swollen at both ends, pubescent; lamina 7-24 x 2.5-7.5 cm, narrow elliptic-rhomboid, apex caudate or caudate-acuminate, base acute or slightly attenuate, margin sinuately dentate, glabrous above, resinous yellow glandular beneath, pubescent on midrib and nerves beneath, chartaceous or subcoriaceous; midrib raised above; secondary_nerves 6-8 pairs, gradually curved; tertiary_nerves obliquely_percurrent. |
| Inflorescence / Flower : | Flowers unisexual; inflorescence simple or branched spike, axillary or terminal. |
| Fruit and Seed : | Capsule, 2-3 cocci, covered with long soft spines. |