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DescriptionShrubs, unarmed or with spine-tipped lateral branchlets. Leaves simple; margin entire. Flowers ± zygomorphic. Sepals 4, ± equal. Petals 0 or 2-4. Disk large and conspicuous. Androgynophore elongated, longer than the sepals. Stamens 4-8. Ovary on an elongated gynophore, 1-locular. Fruit indehiscent or tardily dehiscent, cylindric.