Dutch elm disease
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Dutch elm disease is caused by an Ascomycete fungus that kills elm trees, and is spread by elm bark beetles. Believed to be originally native to Asia, the disease was accidentally introduced into Amer
On a golden elm with characteristic leaf shedding
Asexual synnema of the pathogenic fungus Ophiostoma ulmi can overwinter in bark and wood, and can be spread by beetle vectors.
Beetle feeding galleries on wych elm trunk
Branch death, or flagging, at multiple sites in the crown of a diseased elm
Elm
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Elms are deciduous and semi-deciduous trees comprising the genus Ulmus in the family Ulmaceae. They are distributed over most of the Northern Hemisphere, inhabiting the temperate and tropical-montane
Dutch elm disease
…Dutch elm disease is caused by an Ascomycete fungus that kills elm trees, and is spread by elm bark beetles. Believed to be originally native to Asia, the disease was accidentally introduced into America, Europe, and…
East Coker elm, 2
'Sapporo Autumn Gold', Antella, Florence
Wych elm (Ulmus glabra) leaves and seeds
Asymmetry of leaf, slippery elm U. rubra