Select Page

Myrtle Rust Resources

The Myrtle Rust global host list

Austropuccinia psidii the causal agent of myrtle rust disease (syn. Puccinia psidii, Sphaerophragmiaceae, Pucciniales) is one of the best illustration of an unusual broad host range rust fungi. This pathogen is affecting specifically the Myrtaceae, a family that comprises 142 genera and 5,500 species worldwide (Thornhill et al. 2015).

Rhodamnia maideniana, Tallebudgera Valley ©GeoffPegg Agriscience Queensland, DAF

Establishing the complete list of A. psidii host range is challenging given its broad and continual expansion into new geographical areas and host species. In biodiversity hotspots such as Australia and New Caledonia, the myrtle rust has found a wide diversity of naive host species. Consequences of the encounter of A. psidii and new naive host resulted in a massive expansion of its host range. This list provides an update on the A. psidii global host list, including the recent host list released from New Caledonia and New Zealand. A total of 480 species and subspecies (up to 524 at the taxa level) were recognized as host of A. psidii. The scientific name nomenclature chosen for the genera, taxa, species, subspecies in this list, were extracted from the World Checklist of Selected Plant Families database (Govaerts et al. 2015), a unique and continuously updated synonymized world list of plants by the Royal Botanic Gardens of Kew. To keep consistency and track back the species in the literature, we also include in this list the species names as found in the original literature source.


Govaerts R, Simpson D, Goetghebeur P, Wilson K, Egorova T, Bruhl J (2015) World checklist of Selected Plant Families. Cyperaceae. Kew: The Board of Trustees of the Royal Botanic Gardens, Kew.

Thornhill AH, Ho SY, Kulheim C, Crisp MD (2015) Interpreting the modern distribution of Myrtaceae using a dated molecular phylogeny. Mol Phylogenet Evol 93:29-43. doi:10.1016/j.ympev.2015.07.007

Download the Myrtle Rust global host list here:

Donate to help support our fight against Myrtle Rust


+61 (0)2 6250 9509

Subscribe to our newsletter for Myrtle Rust updates