Abstract
The taxonomy of Stenocarpus (Proteaceae: Stenocarpinae) in New Caledonia is reviewed. The name S. grunowii is re-instated at specific rank. Stenocarpus dumbeensis, S. gracilis, S. intermedius, and S. phyllodineus are treated as synonyms of S. umbelliferus. Stenocarpus × heterophyllus is considered as a hybrid taxon involving parents with multifid and entire leaves. A new species, S. deweae, with red rather than white to yellowish flowers, is described, illustrated and assessed as Endangered according to the IUCN Red List criteria. These changes reduce the number of species now recognized in this genus in New Caledonia from twelve to nine, and all are endemic. An identification key is provided and lectotypes are designated for several names. We also propose new combinations for the three Australian species of Strangea, which are phylogenetically nested within Stenocarpus, with the result that subtribe Stenocarpinae now contains a single genus only, Stenocarpus. Lectotypes are designated for the two names in Strangea based on Drummond's collections from Western Australia. bour and Cécile Aupic), NOU (particularly David Bruy and Jacqueline Tinel), K, BM (Norbert Holstein) and NY (especially Edgardo Rivera) for providing access to their collections, Christian Bräuchler (W) for information, and Kim Kersh (UC/JEPS) and Anna Donatelli (FI) for sending digital images. We are very grateful to Bruce Maslin, Annette Wilson, and Alex George from Perth, Western Australia, who are researching Drummond's collections of Acacia, for their assistance with the Drummond material discussed here and for comments on parts of the manuscript. We thank Catherine Gallagher for her help with material at MEL, Sandy Knapp (BM) for discussions on nomenclature, Kanchi Gandhi for advice on the spelling of Stenocarpus umbelliferus, and the Archives team at K for their help. We also thank David Bruy and Malik Oedin for assistance in the field, Vanessa Hequet for insights into the identification key, Endemia and the RLA-NC for the conservation pre-evaluation, and Peter van Welzen for comments on earlier versions of the manuscript.