Rhamneae : Zizyphus, sp.
"Narrative of a Survey of the Intertropical and Western Coasts of Australia" by Phillip Parker King
The most common trees are Zizyphus, Acacia, and a Capparis: the most common grass Aristida.
"Journals of Travels in Assam, Burma, Bhootan, Afghanistan and TheNeighbouring Countries" by William Griffith
Zizyphus subquinquenerva, Little Nicobar Do.
"In the Andamans and Nicobars" by C. Boden Kloss