Botanical descriptions Habitat and ecology Distribution
|Diagnostic characters :||Deciduous trees with fissured bark. Leaves simple deeply lobed. Stipules linear, free or adnate to petiole. Flowers unisexual on the same tree. Fruit a globose head of capsules, seeds winged.|
|Habit :||Deciduous tree up to 20 m tall.|
|Trunk & bark :||Bole straight, bark grey-black, fissured.|
|Branches and branchlets or twigs :||Twigs terete, glabrous.|
|Exudates :||Exudate absent.|
|Leaves :||Leaves simple, alternate, spiral, deeply lobed in 3 sections.|
Primary veins 3, secondary veins obtuse, tertiary veins reticulate.
Stipules linear, free or adnate to petiole, deciduous.
|Inflorescences or flowers :||Flowers unisexual on the same tree, arranged in a many-flowered inflorescence, terminal. Female head-like on a long peduncle, male head-like on spike-like inflorescence with a short peduncle. Pedicels up to 3 mm long.|
|Fruits :||Fruits aggregated in globose heads up to 3 cm in diameter, formed by many coalescent capsules, spiny, woody.|
|Seeds :||Seed 1 winged.|
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