The Collaborative International Dictionary of English v.0.48:
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. [1913 Webster]WordNet (r) 3.0 (2006):
Myrcia n 1: a genus of tropical American trees and shrubs of the myrtle family [syn: Myrciaria, genus Myrciaria, Myrcia]