What is a genus of shrubs having opposite, petiolate leaves and cymose flowers, several species of which are cultivated as ornamental, as the laurestine and the guelder-rose called?

viburnum — A genus of shrubs having opposite, petiolate leaves and cymose flowers, several species of which are cultivated as ornamental, as the laurestine and the guelder-rose. (Webster's 1913.)

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