Analysis of areal types shows that 32.8% of the families are of tropical and subtropical type, 23.3% tropical to temperate type, and 18.1% typically tropical type.

• 科、属、种的分布区类型分析表明：科的分布区类型以热带和亚热带分布最多(32.；8%25)，其次是热带到温带分布(23