The histology of the prop root apices (aerial) of 4 genera of the Rhizophoraceae was characterized markedly by columnar meristematic area, columella and suberized sheath of root cap.

• 红树科（Rhizophoraceae）4 属的支柱根根端，以显著的柱状分生组织区、根冠柱、栓质化的根冠为特征。