n.ornamental shrub or small tree of swampy areas in southwestern United States having large pink or white sepals and yielding Georgia bark for treating fever
同义词：fever treeGeorgia barkPinckneya pubens
英汉双解大词典
bitterbark/ˈbɪtəˌbaːk/
1.
N（名词）
an Australian tree, Alstonia constricta, with bitter-tasting bark that is used in preparing tonic medicines 苦皮树