@article{fdi:010082301, title = {{M}ultivariate morphometric analysis supported by an anatomical approach to assess species delimitation in {X}yris ({X}yridaceae) in {N}ew {C}aledonia}, author = {{M}orel, {J}. and {L}e {M}oguedec, {G}. and {M}unzinger, {J}{\'e}r{\^o}me}, editor = {}, language = {{ENG}}, abstract = {{X}yridaceae are represented in {N}ew {C}aledonia only by the genus {X}yris, the description of which was last revised in the 1960s, and three endemic species were recognized there at that time, {X}. pancheri, {X}. neocaledonica and {X}. guillauminii. {H}owever, no specimens of {X}. guillauminii were reported from {P} or {L}, although some type material was present. {I}n addition, most material was unidentified at the species level in international herbaria (up to 45% for the {NOU} herbarium), showing that the family had not been studied in the framework of the {F}lore de la {N}ouvelle-{C}aledonie. {I}n total, 129 herbarium specimens were examined for an ascendant hierarchical classification and a principal coordinates analysis based on 18 morphological characters regarded as diagnostic at the species level (including six used in the original revision). {T}he analyses revealed three well-delimited groups that potentially correspond to species-level units. {A} sub-sampling of 21 specimens, representative of these three groups, was studied anatomically (leaf cross-sections) and by scanning electron microscopy (leaf surface and seeds) and provided ten additional characters. {T}his additional dataset validated the taxonomy in three species-level units. {T}he resulting entities were then compared with nomenclatural types, which showed that the first corresponded to {X}. neocaledonica, the second represents a well-delimited, undescribed species, and the third includes types of both {X}. pancheri and {X}. guillauminii, this last being in need of synonymization. {T}he findings of the present study provide a basis for undertaking a taxonomic revision of {X}yris in {N}ew {C}aledonia, including the description of the new species. {A}ll {N}ew {C}aledonian species have an axile placentation and a trilocular ovary, so they belong to {X}yris section {P}omatoxyris, which is no longer endemic to {A}ustralia.}, keywords = {anatomy ; hierarchical clustering ; nomenclature ; species limits ; {SEM} ; {NOUVELLE} {CALEDONIE}}, booktitle = {}, journal = {{B}otanical {J}ournal of the {L}innean {S}ociety}, volume = {196}, numero = {3}, pages = {329--342}, ISSN = {0024-4074}, year = {2021}, DOI = {10.1093/botlinnean/boaa108}, URL = {https://www.documentation.ird.fr/hor/fdi:010082301}, }