DISEASE: Aster yellows
HOST: Daisy
Daisy with stunted and malformed flowers.
Aster yellows | Daisy
DISEASE: Aster yellows
HOST: Daisy (Euryops speciosissimus)
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 fasciation (Leafy gall)
HOST: Daisy
Bacterial fasciation of daisy.
Bacterial fasciation (Leafy gall) | Daisy
DISEASE: Bacterial fasciation (Leafy gall)
HOST: Daisy (Leucanthemum maximum)
PATHOGEN: Rhodococcus fascians
SOURCE: R. Raabe
DISEASE: Bacterial fasciation (Leafy gall)
HOST: Daisy
Daisy with stem and leaf proliferation.
Bacterial fasciation (Leafy gall) | Daisy
DISEASE: Bacterial fasciation (Leafy gall)
HOST: Daisy (Leucanthemum maximum)
PATHOGEN: Rhodococcus fascians
SOURCE: M. Putnam
DISEASE: Bacterial leaf spot
HOST: Hydrangea (Oak-leaf)
Leaf with individual brown necrotic lesions and coalesced lesions that formed large necrotic areas. The disease is caused by an unclassified xanthomonad.
Bacterial leaf spot | Hydrangea (Oak-leaf)
DISEASE: Bacterial leaf spot
HOST: Hydrangea (Oak-leaf) (Hydrangea quercifolia)
PATHOGEN: Xanthomonas campestris
SOURCE: W. Uddin, W. Sinclair
DISEASE: Bacterial stem and rhizome rot
HOST: Iris
Iris stem and rhizome with brown, discolored, rotted portions.
Bacterial stem and rhizome rot | Iris
DISEASE: Bacterial stem and rhizome rot
HOST: Iris (Iris sp.)
PATHOGEN: Burkholderia gladioli pv. gladioli
PATHOGEN SYNONYM: Pseudomonas gladioli pv. gladioli
SOURCE: R. Raabe
DISEASE: Bacterial stem and rhizome rot
HOST: Iris
Mushy rot of stems and rhizomes are characteristic of advanced stage of the disease.
Bacterial stem and rhizome rot | Iris
DISEASE: Bacterial stem and rhizome rot
HOST: Iris (Iris sp.)
PATHOGEN: Burkholderia gladioli pv. gladioli
PATHOGEN SYNONYM: Pseudomonas gladioli pv. gladioli
SOURCE: R. Raabe