butterbur
款冬之類
But·ter·bur n. Bot. A broad-leaved plant (Petasites vulgaris) of the Composite family, said to have been used in England for wrapping up pats of butter.
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butterbur
n : small Eurasian herb having broad leaves and lilac-pink
rayless flowers; found in moist areas [syn: bog rhubarb,
Petasites hybridus, Petasites vulgaris]