DISEASE: Bacterial leaf spot
HOST: Hawaiian ticktrefoil
Hawaiian ticktrefoil with orange-yellow lesions surrounded by broad yellow halos.
Bacterial leaf spot | Hawaiian ticktrefoil
DISEASE: Bacterial leaf spot
HOST: Hawaiian ticktrefoil (Desmodium sandwicense)
PATHOGEN: Xanthomonas axonopodis pv. desmodii
PATHOGEN SYNONYM: Xanthomonas campestris pv. desmodii
SOURCE: I. Buddenhagen
DISEASE: Coffee leaf scorch
HOST: Coffee
Diseased twig with yellowish, stunted leaves (left). Healthy twig with normal-sized leaves (right).
Coffee leaf scorch | Coffee
DISEASE: Coffee leaf scorch
HOST: Coffee (Coffea arabica)
PATHOGEN: Xylella fastidiosa
SOURCE: S. Purcell
DISEASE: Witches'-broom
HOST: Cactus
Witches'-broom of Opuntia cactus.
Witches'-broom | Cactus
DISEASE: Witches'-broom
HOST: Cactus (Opuntia sp.)
PATHOGEN: 'Candidatus Phytoplasma' sp.
PATHOGEN SYNONYM: Phytoplasma (undefined)
SOURCE: R. McCoy, M. Davis