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Haplostichanthus F. Muell.
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Xue, B., Y. C. F. Su, Thomas & R. M. K. Saunders. 2012. Pruning the polyphyletic genus Polyalthia (Annonaceae) and resurrecting the genus Monoon. Taxon 61(5): 1021–1039.
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Papualthia Diels
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Xue, B., Y. C. F. Su, Thomas & R. M. K. Saunders. 2012. Pruning the polyphyletic genus Polyalthia (Annonaceae) and resurrecting the genus Monoon. Taxon 61(5): 1021–1039.
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