DISEASE: Aster yellows
HOST: Ranunculus
Malformation of diseased flower.
Aster yellows | Ranunculus
DISEASE: Aster yellows
HOST: Ranunculus (Ranunculus sp.)
PATHOGEN: 'Candidatus Phytoplasma asteris'
PATHOGEN SYNONYM: Phytoplasma Aster yellows group
SOURCE: R. Raabe
DISEASE: Bacterial blight
HOST: Iris
Iris with irregularly shaped, water-soaked lesions and blighted leaves.
Bacterial blight | Iris
DISEASE: Bacterial blight
HOST: Iris (Iris tectorum)
PATHOGEN: Xanthomonas campestris pv. tardicrescens
SOURCE: M. Goto
DISEASE: Bacterial leaf spot (Blight)
HOST: Ranunculus
Leaf with large, brown necrotic areas delimited by veins.
Bacterial leaf spot (Blight) | Ranunculus
DISEASE: Bacterial leaf spot (Blight)
HOST: Ranunculus (Ranunculus sp.)
PATHOGEN: Xanthomonas campestris
SOURCE: R. Raabe
DISEASE: Halo blight
HOST: Bean
Leaf of 'Bountiful' bean with chlorotic halos, an early stage of disease. Tiny water-soaked are difficult to see.
Halo blight | Bean
DISEASE: Halo blight
HOST: Bean (Phaseolus vulgaris 'Bountiful')
PATHOGEN: Pseudomonas syringae pv. phaseolicola
PATHOGEN SYNONYM: Pseudomonas savastanoi pv. phaseolicola
SOURCE: M. Schroth