Excellent article and I enjoyed reading it very much. I don't know that ferns have been "ignored" by botanists though. In comparison to say, orchids, yes, but there are number of works and floras written about ferns I think. This is the first I 've read about Reunion Is. though and I enjoyed it a lot. I would love to read an expanded version too!
Are there any native insectivorous plants on the island (nepenthes sp. maybe?)
Great great, there are many ferns lovers after all! I did not think of an expanded article but there are so many ferns in the tropics that I could write a couple more articles about our green friends!
No insectivorous plants here, but there are Nepenthes and Dionea in nearby Madagascar, maybe other species but I am zero about those plants!