Besides,the flora has closely relationship with Pantropic and Tropical Asia elements as well as Trop. Australasia,Trop. Africa,Trop.

• 该区系与泛热带和热带亚洲联系最为密切,同时与热带大洋州、热带非洲、热带美洲、北温带、东亚等有一定程度的联系,而与地中海区、西亚、中亚联系最少。