stew·ar·tia 
(st-ärshə, -shē-ə, -tē-ə, sty-)
(st-ärshə, -shē-ə, -tē-ə, sty-)n.
Any of various trees or shrubs of the genus Stewartia, native to the eastern United States and East Asia, having fragrant showy white flowers and smooth bark that peels into flakes.
[New Latin Stewartia, genus name, after John Stuart, Third Earl of Bute (1713-1792), British politician.]