Puccinia malvacearum



Puccinia malvacearum, also known as hollyhock or mallow rust, is a fungal species within the genus Puccinia known for attacking members of the family Malvaceae. An autoecious pathogen, it can complete its life cycle using a single host.

It was originally found on the leaves of a species of Malva in Chile. Other plants also affected by the rust include Abutilon, Alcea (Hollyhock), Hibiscus, Lavatera, Malvastrum and Sphaeralcea.

Suggested control measures (in the US), include sanitation (removal or destruction of affected plants or plant portions) or treatment with fungicides.

Other sources

 * Hollyhock Rust: Puccinia malvacearum. University of Colorado Extension Service.
 * Rust of Hollyhock. University of Nebraska Department of Plant Pathology.