Hydrangea arborescens Hydrangea arborescens /haɪˈdrændʒiə ɑːrboʊˈrɛsɛnz/

noun

1. Deciduous shrub with creamy white flower clusters; eastern United States  ( Hydrangea arborescens , wild hydrangea )
   deciduous shrub with creamy white flower clusters; eastern United States