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Trees, shrubs, or herbs with watery juice. Leaves opposite, rarely verticellate, 3-9-nerved, usually petiolate; stipules 0. Flowers regular, perfect, usually showy, rarely fragrant, in terminal clusters; calyx usually 4 or 5-lobed, the lobes imbricated in the bud; petals as many as the lobes of the calyx, inserted on its throat, imbricated or convo
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