DISEASE: Aster yellows
HOST: Kalanchoe
Kalanchoe with malformed inflorescences.
Aster yellows | Kalanchoe
DISEASE: Aster yellows
HOST: Kalanchoe (Kalanchoe sp.)
PATHOGEN: 'Candidatus Phytoplasma asteris'
PATHOGEN SYNONYM: Phytoplasma Aster yellows group
SOURCE: R. Raabe
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: 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