Howard F. Schwartz, Colorado State University, Bugwood.org
Rust uredia and telia (Uromyces appendiculatus) on the surface of a bean leaf.
Cesar Calderon, USDA APHIS PPQ, Bugwood.org
dry bean rust (Uromyces appendiculatus) sign on bean (Phaseolus spp.)
Cesar Calderon, USDA APHIS PPQ, Bugwood.org
dry bean rust (Uromyces appendiculatus) asexual spore
David B. Langston, University of Georgia, Bugwood.org
Small, red to brown spots that coalesce, eventually covering a large portion of the leaf. Plant may defoliate.
Mary Ann Hansen, Virginia Polytechnic Institute and State University, Bugwood.org
dry bean rust (Uromyces appendiculatus) symptoms on bean (Phaseolus spp.)
Howard F. Schwartz, Colorado State University, Bugwood.org
Close-up view of the pycnium of bean rust (Uromyces appendiculatus).
Howard F. Schwartz, Colorado State University, Bugwood.org
Bean plants severely infested with rust (Uromyces appendiculatus).
M.A. Brick, Bugwood.org
Bean leaf showing symptoms of rust (Uromyces appendiculatus) in variety trials conducted by Colorado State University.
Howard F. Schwartz, Colorado State University, Bugwood.org
Telia of bean rust (Uromyces appendiculatus) on a bean leaf.
Howard F. Schwartz, Colorado State University, Bugwood.org
Bean leaves displaying the "green island effect" of bean rust (Uromyces appendiculatus).
Howard F. Schwartz, Colorado State University, Bugwood.org
Uredinia of bean rust (Uromyces appendiculatus) on the leaves of plants in the field.
Howard F. Schwartz, Colorado State University, Bugwood.org
Uredinia of bean rust (Uromyces appendiculatus) on plants, causing wilting of the bean canopy in the field.
Howard F. Schwartz, Colorado State University, Bugwood.org
Uredinia of bean rust (Uromyces appendiculatus) on a bean pod.
Howard F. Schwartz, Colorado State University, Bugwood.org
Telia of rust (Uromyces appendiculatus) on the stem of a bean plant.
Howard F. Schwartz, Colorado State University, Bugwood.org
Rust telia (Uromyces appendiculatus) on bean pods in the field.
Howard F. Schwartz, Colorado State University, Bugwood.org
Rust (Uromyces appendiculatus) reaction on the dry bean varieties UI126 and Bill Z.
Howard F. Schwartz, Colorado State University, Bugwood.org
Rust aecium (Uromyces appendiculatus) on the leaf of a volunteer dry bean plant.
Howard F. Schwartz, Colorado State University, Bugwood.org
Aecia and pycnia of bean rust (Uromyces appendiculatus) on the leaves and stem of a volunteer dry bean plant.
Howard F. Schwartz, Colorado State University, Bugwood.org
Aecia of bean rust (Uromyces appendiculatus) on the stem of a dry bean plant inoculated in the greenhouse.
Howard F. Schwartz, Colorado State University, Bugwood.org
Telia of bean rust (Uromyces appendiculatus) on the leaf of a bean plant.
Rust uredia and telia (Uromyces appendiculatus) on the surface of a bean leaf.
dry bean rust (Uromyces appendiculatus) sign on bean (Phaseolus spp.)
dry bean rust (Uromyces appendiculatus) asexual spore
Small, red to brown spots that coalesce, eventually covering a large portion of the leaf. Plant may defoliate.
dry bean rust (Uromyces appendiculatus) symptoms on bean (Phaseolus spp.)
Close-up view of the pycnium of bean rust (Uromyces appendiculatus).
Bean plants severely infested with rust (Uromyces appendiculatus).
Bean leaf showing symptoms of rust (Uromyces appendiculatus) in variety trials conducted by Colorado State University.
Telia of bean rust (Uromyces appendiculatus) on a bean leaf.
Bean leaves displaying the "green island effect" of bean rust (Uromyces appendiculatus).
Uredinia of bean rust (Uromyces appendiculatus) on the leaves of plants in the field.
Uredinia of bean rust (Uromyces appendiculatus) on plants, causing wilting of the bean canopy in the field.
Uredinia of bean rust (Uromyces appendiculatus) on a bean pod.
Telia of rust (Uromyces appendiculatus) on the stem of a bean plant.
Rust telia (Uromyces appendiculatus) on bean pods in the field.
Rust (Uromyces appendiculatus) reaction on the dry bean varieties UI126 and Bill Z.
Rust aecium (Uromyces appendiculatus) on the leaf of a volunteer dry bean plant.
Aecia and pycnia of bean rust (Uromyces appendiculatus) on the leaves and stem of a volunteer dry bean plant.
Aecia of bean rust (Uromyces appendiculatus) on the stem of a dry bean plant inoculated in the greenhouse.
Telia of bean rust (Uromyces appendiculatus) on the leaf of a bean plant.