Elm yellows | Elm

HOST:Elm

HOST (LATIN):Ulmus americana

PATHOGEN:Candidatus Phytoplasma ulmi

SYNONYM:Phytoplasma Elm yellows group

SOURCE:W. Sinclair

Branches with butterscotch discoloration (center) and necrotic flecks in phloem and vascular cambium (right). Healthy branch (left). Sudden wilt and browning is common with small trees.