DISEASE: Bacterial leaf blight
HOST: Konjac (Devil's tongue)
Severely blighted leaves of konjac.

Bacterial leaf blight | Konjac (Devil's tongue)
DISEASE: Bacterial leaf blight
HOST: Konjac (Devil's tongue) (Amorphophallus konjaci)
PATHOGEN: Acidovorax konjaci
PATHOGEN SYNONYM: Pseudomonas avenae subsp. konjaci
SOURCE: N. Hayashi, M. Goto
DISEASE: Bacterial leaf spot
HOST: Crown-of-thorns
Leaves with brown lesions surrounded by bright yellow halos.

Bacterial leaf spot | Crown-of-thorns
DISEASE: Bacterial leaf spot
HOST: Crown-of-thorns (Euphorbia milii)
PATHOGEN: Xanthomonas axonopodis pv. poinsettiicola
PATHOGEN SYNONYM: Xanthomonas campestris pv. poinsettiicola
SOURCE: APS
DISEASE: Elm yellows
HOST: Elm
Elm yellows is characterized by witches'-brooms and stunting. Some cultivars have both yellow and reddish foliar discoloration.

Elm yellows | Elm
DISEASE: Elm yellows
HOST: Elm (Ulmus parvifolia)
PATHOGEN: 'Candidatus Phytoplasma ulmi'
PATHOGEN SYNONYM: Phytoplasma Elm yellows group
SOURCE: W. Sinclair