Leaf Rust Caused by Kuehneola uredinis on Native and Nonnative Rubus Species in Hawaii. Donald E. Gardner, Research Plant Pathologist, National Park Service Cooperative Park Studies Unit, University of Hawaii, Honolulu 96822. Charles S. Hodges, Chief Plant Pathologist, Institute of Pacific Islands Forestry, Pacific Southwest Forest and Range Experiment Station, U.S. Forest Service, Honolulu, HI 96813. Plant Dis. 67:962-963. Accepted for publication 28 February 1983. This article is in the public domain and not copyrightable. It may be freely reprinted with customary crediting of the source. The American Phytopathological Society, 1983. DOI: 10.1094/PD-67-962.

Kuehneola uredinis is widely distributed in Hawaii, where it primarily attacks Rubus penetrans, a noxious exotic species. Other nonnative Rubus species are not infected, however. R. macraei and R. hawaiiensis, both valued endemic species, are mildly and inconsequentially attacked by the rust.

Keyword(s): biocontrol, Rubus ellipticus, R. glaucus, R. rosaefolius.