I would check with some returned Peace Corps volunteers. I will do some searching for you as well as I have a couple of bookmarks for that part of the world as well as a few friends down there. also, my boss is a former PCV from Fiji and he has some obscure plant ID guides that I will scan. send along a fax number and i can fax the pages to you so you can get the complete aroid list. should be a fun trip. enjoy. bart