Anybody who is interested to find out about the modern history of Pitcairn, go to the Official Pitcairn Government web site.
A good place to start any investigation of Pitcairn is the Pitcairn Islands Study Center.
The definitive reference for the flora of the Pitcairn Islands is 'Plants of the Pitcairn Islands,' by Lars-Ake Gothesson, published in 1997 by the Centre for South Pacific Studies, at the University of New South Wales, Sydney, Australia. There are very few resources, as you would expect, given the difficulty of reaching and researching the Islands. There are, of course, many imported plants not indigenous to the Islands, but these are well defined in the book.
A comprehensive report about the threatened species ofthe Pitcairn Islands has been published by Waldren et al.
Although there are many invasive plant species on Pitcairn, there is the prospect of studying the changes to the native species in view of the isolation of the location. Waldren at Trinity College Dublin is the expert in this area.
Other useful papers researching the flora of Pitcairn are :
'A comparison of the vegetation communities from the Islands of the Pitcairn Group'
Waldren,S., Florence, J., Chepstow-Lusty,A.J. Biological Journal of the Linnean Society(1995),56:121-124
'The flora of the Pitcairn Islands: a review' ibid. 79-119
'The Non-Native Vascular Plants of Henderson Island, South Central Pacific Ocean'
Waldren,S., Marshall I. Weisler, Jon G. Hather, Dylan Morrow.
Atoll Research Bulletin No.463 National Museum of Natural History, Smithsonian, Washington