| Noun | 1. | genus Laguncularia - a genus of Laguncularia plant genus - a genus of plants Combretaceae, combretum family, family Combretaceae - a family of tropical trees and shrubs of the order Myrtales Laguncularia racemosa, white mangrove - shrub to moderately large tree that grows in brackish water along the seacoasts of western Africa and tropical America; locally important as a source of tannin |