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Puccinia horiana Henn. (Whipps 1993)
Chrysanthemum white rust
Asia (Bonde et al. 2015)
First discovered in 1977; was believed to have been eradicated but has reappeared several times (Bonde et al. 2015)
Potential of this organism to be transported with prohibited articles of chrysanthemum. (APHIS 2008)
Serious fungal disease of chrysanthemums that causes infected plants to be unmarketable, resulting in large economic losses (Wise et al. 2004)
Not currently established
Chrysanthemum white rust, symptoms
Photo by Flroida Division of Plant Industry, Florida Department of Agriculture and Consumer Services
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APHIS. 2008. Plant Pests and Diseases Program: Chrysanthemum White Rust. USDA, Animal and Plant Health Inspection Service.
Bonde, M.R., C.A. Murphy, G.R. Bauchan, et al. 2015. Evidence for systemic infection by Puccinia horiana, causal agent of chrysanthemum white rust, in chrysanthemum. Ecology and Epidemiology 105(1):91-98.
Whipps, J.M. 1993. A review of white rust (Puccinia horiana Henn.) disease on chrysanthemum and the potential for its biological control with Verticillium lecanii (Zimm.) Viégas. Annals of Applied Biology 122(1):173-187.
Wise, K.A., D.S. Mueller, and J.W. Buck. 2004. Quarantines and ornamental rusts. APSnet Features.