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Magnoliaceae A family of trees and shrubs that have aromatic bark. The leaves are simple, with large stipules that enclose the apical bud and leave a scar. The flower parts are numerous, free, and spirally arranged. The fruits are usually dehiscent, and the seeds mostly large and arillate. They yield useful timber and ornamental flowers. There are 7 genera, with 220 species, centred on temperate and tropical Asia, but also occurring in N. and S. America.