The foristic elements are complex, and the majority are closely related to foreign pteridofloras.Malayan, Indian, Indochinese and East Asian play important roles in fern flora of Hainan Islang.

• 海南岛蕨类区系组成复杂，且外来植物成分占据多数，马来西亚、印度、中南半岛和东亚植物区系成分在海南岛蕨类区系中占有较大比重。