ELM YELLOWS
|
Elm

SOURCE:
W. Sinclair
DISEASE:
Elm yellows
HOST:
Elm
(Ulmus americana)
Diseased twig (right) with epinasty, chlorosis, and yellowing of leaves. Sometimes both yellow and green leaves occur on same branch. Healthy branch (left).
PATHOGEN:
'Candidatus Phytoplasma ulmi'
PATHOGEN SYNONYM:
Phytoplasma Elm yellows group