hydrangea

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hy·dran·gea / hīˈdrānjə/ • n. a shrub or climbing plant (genus Hydrangea, family Hydrangeaceae) with rounded or flattened flowering heads of small florets, the outer ones of which are typically infertile. Its many species include late (or panicled) hydrangea (H. paniculata), an ornamental shrub, and bigleaf hydrangea (H. macrophylla), commonly grown for florists and as a houseplant.

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