Myrtastrum is a genus of plants in the Myrtaceae first described as a genus in 1941.Burret, (Maximilian) Karl Ewald. 1941. Notizblatt des Botanischen Gartens und Museums zu Berlin-Dahlem 15: 494Tropicos, Myrtastrum Burret It contains only one known species, Myrtastrum rufopunctatum, endemic to New Caledonia.Kew World Checklist of Selected Plant FamiliesGovaerts, R., Sobral, N., Ashton, P., Barrie, F., Holst, B.K., Landrum, L.L., Matsumoto, K., Fernanda Mazine, F., Nic Lughadha, E., Proença, C. & al. (2008). World Checklist of Myrtaceae: 1-455. Kew Publishing, Royal Botanic Gardens, Kew. It is a phylogenetically isolated genus within the tribe Myrteae.Vasconcelos, Thais N.C., Carol E.B. Proença, Berhaman Ahmad, Daniel S. Aguilar, Reinaldo Aguilar, Bruno S. Amorim, Keron Campbell, et al. (2017) Myrteae Phylogeny, Calibration, Biogeography and Diversification Patterns: Increased Understanding in the Most Species Rich Tribe of Myrtaceae.” Molecular Phylogenetics and Evolution 109: 113–37. .
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