Novitates neocaledonicae XVI: Oxyrhynchus margueriteae sp. nov. (Fabaceae), a new species endemic to New Caledonia, and the first record of the genus in the territory

A liana with a red exudate belonging to the Fabaceae family had been collected and attributed on a morphological basis to the genus Oxyrhynchus, which had never been reported in New Caledonia. The plant was sequenced (ITS) and its attribution to the genus Oxyrhynchus was confirmed. Morphological characters were then used to show that it differed from all previously known species, and that it was therefore a new species, which is described. The plant is known from just one locality and seven individuals; we assign it a preliminary status of Critically Endangered (CR).