Trees or treelets with stout, often hollow branches. Stipules entire. Leaves conferted at intervals (Fig. 10), glandular along the margins, nerves almost straight-ly ascending at an angle of 60-70°. Inflorescences terminal, many-flowered, panicles often with many hypsophylls at base; peduncle and branches distinctly ribbed, often with con-or recaulescences. Flowers ☿ or polygamous. Sepals 5. Petals 5, white, creamy or purplish. Staminodes ∞, in 1 or 2 whorls, the inner ones mutually and with the stamens connate at base. Ovary 3-carpelled; stigmas 1 or 3. Fruit opening with 3 longitudinal slits, the style usually not splitting. Seeds winged like a propeller with 2 blades.
Pioneer plants, from sea-level up to 3000 m, especially in natural or anthropogenous secondary vegetation.
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