Included here is Sri Lanka and the Maldive Islands in the Indian Ocean.
Of the endemic vascular plants so far recorded there are about 330 species in 139 genera and 58 families but no endemic genera. One endemic genus is marked red but there is reported to be a number of endemic genera so further information is required.
Campbell, D. G. & Hammond, H. D. 1989. Floristic Inventory of Tropical Countries. The New York Botanical Garden.
De Vlas, J. & de Vlas-de Jong, J. 2008. Illustrated field guide to the flowers of Sri Lanka. Mark Booksellers and Distributors (Pvt) Ltd.
Fernando, D. 1954. Wild Flowers of Ceylon. West Brothers, Mitcham.
Fernando, S. N. U. 1968. The Natural Vegetation of Ceylon. Colombo: Swabasha.
Gunatilleke, I. A. U. N. & Gunatilleke C. V. S. 1991. Woody endemics of the wet lowlands of Sri Lanka and their conservation. Biological Conservation, 55: 17-36.
Gunawardenia, D. C. 1968. The Flowering Plants of Ceylon. Lake House Investments Ltd.
Puri, G. S., Gupta, R. K., Meher-Homji, V. M. & Puri, S. 1989. Forest Ecology. Plant form, diversity, communities and succession. 2nd Edition. Volume 2. Oxford & IBH Publishing Co. PVT. Ltd.
Sumithraarachchi, D. B. 1989. Sri Lankan forests: diversity and genetic resources. In: Tropical Forests - Botanical Dynamics, Speciation and Diversity. Eds. L. B. Holm-Nielsen, I. C. Nielsen and H. Balslev. Academic Press.
Thwaites, G. H. K. 1864. Ceylon Plants. Dulau & Co.