DISEASE: Bunch disease
HOST: Hickory
Bunch disease of shagbark hickory caused by a phytoplasma.
![](/sites/default/files/plant_disease/images/0471.jpg)
Bunch disease | Hickory
DISEASE: Bunch disease
HOST: Hickory (Carya sp.)
PATHOGEN: 'Candidatus Phytoplasma' sp.
PATHOGEN SYNONYM: Phytoplasma (undefined)
SOURCE: P. Fenn
DISEASE: Pear decline
HOST: Pear
'Bartlett' pears were grafted onto tolerant rootstock. All trees are infected. Note yellowish, diseased branches.
![](/sites/default/files/plant_disease/images/0697.jpg)
Pear decline | Pear
DISEASE: Pear decline
HOST: Pear (Pyrus communis 'Bartlett')
PATHOGEN: 'Candidatus Phytoplasma pyri'
PATHOGEN SYNONYM: Phytoplasma Apple proliferation group
SOURCE: C. Smart