Synonyms for Black Mangrove (same or very similar meaning)
WordNet sense 1 (an Australian tree resembling the black mangrove of the West Indies and Florida):
Aegiceras majusWordNet sense 2 (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):
Avicennia marinaFrom the ODE community, based on WordNetadd/edit