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|Noun||1.||genus Avicennia - small genus of tropical shrubs or trees|
asterid dicot genus - genus of more or less advanced dicotyledonous herbs and some trees and shrubs
family Verbenaceae, verbena family, Verbenaceae, vervain family - family of New World tropical and subtropical herbs and shrubs and trees
Avicennia marina, black mangrove - a mangrove of the West Indies and the southern Florida coast; occurs in dense thickets and has numerous short roots that bend up from the ground