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A monograph of the Nengella group of Hydriastele (Arecaceae)
- Heatubun, CharlieD., Petoe, Peter, Baker, WilliamJ.
- Kew bulletin 2018 v.73 no.1 pp. 18
- Arecaceae, inflorescences, plant taxonomy, protandry, taxonomic revisions, understory, New Guinea
- A taxonomic revision is presented of the Nengella group of the palm genus Hydriastele (Arecaceae: Arecoideae) in New Guinea, which comprises slender understorey or midstorey palms with small, protandrous inflorescences. Seven species are accepted: Hydriastele aprica, H. divaricata sp. nov., H. flabellata, H. montana, H. pinangoides, H. simbiakii sp. nov., and H. splendida sp. nov. All species are illustrated and their distributions are mapped. In addition, a key to species and preliminary IUCN Red List Assessments are provided.