Dubuisson J. Y. auteur aut IRD Boucheron-Dubuisson E. auteur aut IRD Le Pechon T. auteur aut IRD Bausero P. auteur aut IRD Droissart Vincent auteur aut IRD Deblauwe V. auteur aut IRD Ebihara A. auteur aut IRD Hennequin S. auteur aut IRD Rouhan G. auteur aut IRD text journalArticle eng text/pdf born digital access Vandenboschia radicans (supposedly Neotropical and African), V. speciosa (supposedly European and Macaronesian) and V. gigantea (supposedly from western Indian Ocean) are morphologically close species and often confused in collections and in floras. Moreover, the status of African populations is still strongly debated. We undertook to combine morphological, morphometrics and molecular phylogenetic analyses, on these three species, by also including the Neotropical V. collariata, morphologically close to V. radicans, to try to discriminate putative geographical lineages and discuss their taxonomic status. Our results show that V. collariata is distinct from the other species, and that V. radicans, V. speciosa, V. gigantea and the African specimens remain morphologically and morphometrically indistinguishable. Nevertheless, the Neotropical specimens of V. radicans, V. speciosa and V. gigantea are each genetically strongly distinct and are thus clearly supported as distinct species. African specimens are all grouped into a distinct clade sister to V. gigantea and are distinguished by the presence of a well-developed wing on the stipe, lacking in V. gigantea. Taking into account this stipe feature as well as genetic differences, we describe here Vandenboschia confusa as a new species corresponding to the African populations. The origin of this species in the region is discussed, in addition to the complex taxonomy of European-Macaronesian V. speciosa. specialized Vandenboschia radicans morphometrics Africa Indian Ocean filmy ferns AFRIQUE MADAGASCAR OCEAN INDIEN 076 169 2 268-283 2022 2381-8107 https://www.documentation.ird.fr/hor/fdi:010084657 10.1080/23818107.2022.2062445 2381-8107 [F B010084657] https://www.documentation.ird.fr/hor/fdi:010084657 https://www.documentation.ird.fr/intranet/publi/2022-06/010084657.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2022-06-03 2025-02-24 fdi:010084657 fre