Ramaiah SampangiSouthwest Idaho R&E Center, University of Idaho, Parma 83660Email: rsampangi@gmail.com
Host: Lomatium dissectum (Nutt.) Mathias & Constance (fernleaf biscuitroot)Disease name: RustPathogen name: Puccinia jonesii Peck.
Rust on Lomatium dissectum.
Lomatium (Apiaceae family) is a genus of 70 to 80 perennial herbs native to western North America, and rusts are obligate parasites that attack a large number of plant species. Rust infection starts in the lower canopy and quickly moves up the plant, causing bright orange hypertrophied branches with conspicuous plant tissue overgrowth randomly distributed over the plant, particularly on growing tips. Affected branches are ultimately killed. There are no symptoms on the flowers; however, seed production may be affected if the plant is severely affected by the disease.
Picture your photograph as the APSnet Featured ImageClick here to find out more
License to Copy. This notice hereby grants permission to APSnet users to copy the image featured for noncommercial, personal use. All components of APSnet are copyrighted and may not be reproduced or distributed except by express permission of APS. Copyright is not claimed for material provided by United States government employees as part of their work. APSnet copyright extends to images, text, graphics, photographs, illustrations, audio, video, computer software, and all other elements of the site.Instructions to Copy. For PC, position your mouse cursor on the featured image, click the right mouse button, and choose "Save Picture As..." or "Save this Image as..." whichever is the case. For Mac, click the only mouse button and follow the same steps. Users may want to set up a specific directory and file naming scheme for storing images; otherwise, they will be saved using your system defaults. Images may be used in any software application that supports JPEG file format or viewed in an Internet browser as local files.