References to scientific articles on Puccinia rust in Hawaii and elsewhere, many available on-line. May 2007

A database of worldwide hosts of Puccinia rust, including new records from Hawaii, November 2006

Algal leaf spot mimics rust, October 2006

A common algal leaf spot is similar in appearance to the Puccinia rust. The algal leaf spots are on the upper surfaces of the leaves only and the colony has a green border with red spores in the center. The algae is presumably Cephaleuros virescens.

Rust on native species, August 2006

Rust on rose apple, February 21, 2006

Rust update, December 2005

A new rust occuring on ohia, Metrosideros polymorpha

References to scientific articles on Puccinia rust in Hawaii and elsewhere, many available on-line. May 2007

Coutinho, TA, MJ Wingfield, AC Alfenas, and PW Crous. 1998. Eucalyptus rust: a disease with the potential for serious international implications. ( 1.3 MB) Plant Disease 82: 19-825.

Glen, M, AC Alfenas, EAV Zauza, MJ Wingfield, and C Mohammed. 2007. Puccinia psidii: a threat to the Australian environment and economy – a review. Australasian Plant Pathology 36(1) 1–16. Abstract only. “The pathogen has recently expanded its geographical range to Hawaii, increasing concerns about the potential for an incursion in Australia. This paper reviews the taxonomy, biology, impact and options for control of P. psidii. It also discusses the probable impact if an incursion were to occur in Australia and the preparations that must be made to mitigate adverse consequences.”

Grgurinovic, CA, D Walsh, and F Macbeth. 2006. Eucalyptus rust caused by Puccinia psidii and the threat it poses to Australia. EPPO Bulletin 36: 486–489. “Puccinia psidii, which causes the disease Eucalyptus rust, poses a threat to biodiversity in Australia and the Eucalyptus forest industry worldwide. It is native to South America and Central America and has spread to North America (Mexico, USA – Florida). In mid-2005, the rust was reported in Hawaii, USA, which means it is now present in the Pacific region.”

Haines, R, J Simpson, and M Cole. November 2006. Developing an Australian Guava Rust Strategy "… ACIAR has supported some pioneering work on guava rust. This seminar will present the rationale for and scope of this work, and then go on to discuss the risk that guava rust poses for Australia, and the interest of State and federal biosecurity and agricultural authorities in participation in a regional approach to the threat.”

La Rosa, AM and R Hauff. 2006. Incidence and Evaluation of a New Rust Disease on Myrtaceae in Hawaii: Puccinia psidii Winter, Guava Rust. ( poster) USDA Forest Service, Institute of Pacific Islands Forestry and Hawaii State Department of Land and Natural Resources, Division of Forestry and Wildlife.

Simpson, JA, K Thomas and CA Grgurinovic. 2006. Uredinales species pathogenic on species of Myrtaceae. Abstract only Australasian Plant Pathology 35: 546-562.
Guava rust, Puccinia psidii, is now known to occur on species in both subfamilies of Myrtaceae, including one of two tribes of the subfamily Psiloxyloideae and seven of the 15 tribes of subfamily Myrtoideae, a total of 20 genera and 71 species. Susceptibility to Puccinia psidii seems to be low among species of Myrtaceae from the Americas but more common among taxa from Asia, Australia and the Pacific.”

Uchida, J, S Zhong, and E Killgore. 2006. First Report of a Rust Disease on Ohia Caused by Puccinia psidii in Hawaii. Plant Disease 90: 524.