myrcia 
[医] 香叶, 玉桂叶
myrcia[ noun ]
a genus of tropical American trees and shrubs of the myrtle family
<noun.plant>
Myrcia \Myr"ci*a\, n. [NL.] (Bot.)
A large genus of tropical American trees and shrubs, nearly
related to the true myrtles ({Myrtus}), from which they
differ in having very few seeds in each berry.