DISEASE: Black rot
HOST: Broccoli
Blight and rot of flower buds.
![](/sites/default/files/plant_disease/images/0173.jpg)
Black rot | Broccoli
DISEASE: Black rot
HOST: Broccoli (Brassica oleracea var. italica)
PATHOGEN: Xanthomonas campestris pv. campestris
SOURCE: M. Shurtleff
DISEASE: Bunch disease (Witches'-broom)
HOST: Butternut
Bunch disease of butternut.
![](/sites/default/files/plant_disease/images/0174.jpg)
Bunch disease (Witches'-broom) | Butternut
DISEASE: Bunch disease (Witches'-broom)
HOST: Butternut (Juglans cinerea)
PATHOGEN: 'Candidatus Phytoplasma pruni'
PATHOGEN SYNONYM: Phytoplasma X-disease group
SOURCE: W. Sinclair