New catalogue of the vascular flora of the Juan Fernandez Archipelago (Chile)

After a short general overview of the Juan Fernandez archipelago (Chile) we present: an alphabetic and anotated list of the native and endemic plants; an alphabetic and anotated list of the introduced plants; an up to date (2006) systematic catalogue of the vascular plants [Pteridophytae and Spermatophytae (Gymnospermae and Angiospermae)], present in these islands. An evaluation of the threatened level (UICN categories), restricted to the geographic area of the archipelago, is designed for each native and endemic plant, to help in the elaboration of the conservation priorities. For each introduced plant, its degree of naturalization and the year of its first signting are specified, as well as an evaluation of its dangerousness to help the preservation of the ecosystems and species. For each taxa present on the archipelago, the distribution island by island is indicated. For the first time the Morros Juanango and Verdugo (big rocks with plants, isolated in the sea) are considered as biogeographic entities. Statistical analyses of all these data are given in tabular and graph form. (bilingual paper french-spanish, Chile).