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Rose. A large genus of plants found chiefly in temperate regions. They are usually erect thorny shrubs, with compound leaves, and flowers of all shades of white, pink, or yellow. The calyx consists of five sepals, united in the lower part to form a fleshy tube, which encloses the fruits. There are normally five petals, but under cultivation the number is often much increased at the expense of the stamens, which are indefinite in number. The rose is one of the most beautiful and fragrant of flowers and has been held in high estimation for centuries.

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