Citrus (Zhishi/bitter orange)
Citrus is a genus of flowering trees and shrubs in the family Rutaceae. Plants in the genus produce citrus fruits, such as citrons, mandarins, and pomelos. Many important citrus crops have been developed through extensive hybridization, including oranges, lemons, grapefruits, and limes, all of which have many cultivars.
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Research Mentions
Citrus compound hits multiple brain receptors tied to mood
The bitter orange and other citrus trees you might grow or see in a garden produce this compound ...