Ramaiah SampangiSouthwest Idaho R&E Center, University of Idaho, Parma 83660Email: firstname.lastname@example.org
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.
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