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Abstract
Phylogenetic relationships within Araceae tribe Schismatoglottideae are elucidated based on nuclear ITS and plastid matK. Thirty genera are recognised, composed of 13 pre-existing genera (Apoballis, Aridarum, Bakoa, Bucephalandra, Fenestratarum, Galantharum, Ooia, Phymatarum, Pichinia, Piptospatha, Schismatoglottis, Schottariella and Schottarum), five resurrected genera (Colobogynium, Gamogyne, Heteroaridarum, Hottarum and Rhynchopyle) and 11 new genera: Bakoaella, Bidayuha, Burttianthus, Gosong, Hera, Kiewia, Nabalu, Pursegloveia, Naiadia, Tawaia and Toga. Significant recircumscription is proposed for the pre-existing genera Aridarum, Bakoa and Piptospatha. Schismatoglottis remains imperfectly delineated despite resolution of a well-supported corpus defined by hapaxanthic stems and containing the nomenclature type. An updated taxonomic treatment is presented and all necessary nomenclatural changes are made including a new generic name, Vesta to replace Hestia, which has been discovered to be preoccupied by Hestia, a fossil lycopsid. All genera, including representatives of each clade pertinent to Schismatoglottis sens. str. are illustrated from living plants.
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Acknowledgements
Fieldwork associated with this research was most recently under Sarawak Forestry Department Permission to Conduct Research on Biological Resources Permit No. NPW.907.4.4(JLD.14)-159 and Park Permit No. WL82/2017. The collaboration and support of the Sarawak Forestry Department, the Forest Research Centre (Kuching) and the Sarawak Biodiversity Centre are gratefully acknowledged.