Elytroderma needle cast

Elytroderma needle cast - Discoloured needles resulting from infection by <em>Elytroderma</em> <em>deformans</em>
  • Latin name: Elytroderma deformans (Weir) Darker
  • French name: Rouge élytrodermien
  • Division: Ascomycota
  • Class: Rhytismatales
Description

Micro-habitat(s)

Needle

Distribution

Canada

Damage, symptoms and biology

Damage is caused by branch and stem deformation, and growth reduction resulting from defoliation. Although the impact of the disease is highest on young trees or trees with poor crowns, infected mature trees may be predisposed to root disease or bark beetle attack. Diseased trees are also considered to have negative visual impact in high-value recreational sites.

Other information

The incidence of this disease is highest where moist environmental conditions prevail, often near lakes and streams.

Canadian Forest Service Publications

Elytroderma needle cast

Information on host(s)

Main host(s)

Ponderosa pine, shore pine

Secondary host(s)

Jack pine, Jeffrey pine

Photos
  • Elytroderma needle cast Discoloured needles resulting from infection by Elytroderma deformans
  • Elytroderma needle cast Discoloured needles resulting from infection by Elytroderma deformans
  • Elytroderma needle cast Broom symptoms of Elytroderma needle cast
  • Elytroderma needle cast Broom symptoms of Elytroderma needle cast
  • Elytroderma needle cast Slit-like fruiting bodies of Elytroderma deformans
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