Neoguillauminia is a genus of plants in the family Euphorbiaceae first described as a genus in 1938.Croizat, Léon Camille Marius. 1938. Philippine Journal of Science 64: 398Tropicos, Neoguillauminia Croizat It contains only one known species, Neoguillauminia cleopatra, endemic to New Caledonia.Kew World Checklist of Selected Plant FamiliesGovaerts, R., Frodin, D.G. & Radcliffe-Smith, A. (2000). World Checklist and Bibliography of Euphorbiaceae (and Pandaceae) 1-4: 1-1622. The Board of Trustees of the Royal Botanic Gardens, Kew. Its closest relative is Calycopeplus from Australia.Horn, J. W., B. W. van Ee, J. J. Morawetz, R. Riina, V. W. Steinmann, P. E. Berry, and K. J. Wurdack. (2012) Phylogenetics and the Evolution of Major Structural Characters in the Giant Genus Euphorbia L. (Euphorbiaceae)." Molecular Phylogenetics and Evolution 63 (2): 305–26.
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