Horizon 1 1 17 ACL : Articles dans des revues avec comité de lecture répertoriées par l'AERES Phytotaxa 176-180 NOUVELLE CALEDONIE 2016 fdi:010068390 ENG Phytotaxa 1179-3155 ISI:000388927400009 2 10.11646/phytotaxa.278.2.9 https://www.documentation.ird.fr/hor/fdi:010068390 https://horizon.documentation.ird.fr/exl-doc/pleins_textes/divers16-10/010068390.pdf 278 Horizon (IRD) Pycnandra longiflora (Sapotaceae) belongs to the largest endemic genus in New Caledonia. It is only known from the type collection made in 1861-67 at the obscure locality "Gatope". Relocation of this species has been of high priority for more than a decade, but without success. Pycnandra longiflora was therefore recently declared extinct. However, a population was recently discovered near a mining site at Onajiele, in the Ouazangou-Taom massif, and it is revealed that P. longiflora has the most spectacular flowers in the entire genus, being large and bicoloured in red and yellow. A thorough description is here outlined and we propose a preliminary IUCN status as Critically Endangered. 076 ; 082 UR123