Phomopsis canker of douglas-fir

Latin name: Diaporthe lokoyae Funk
French name: Chancre phomopsien du Douglas
Division: Ascomycota
Class: Diaporthales

Description

Micro-habitat(s)

Branch, Annual shoot

Distribution

Western Canada

Damage, symptoms and biology

Sporadic outbreaks of this disease occur in plantations and nurseries. Most damage is minor, particularly on older trees. Severe top-kill and girdling of younger trees can result in poor growth form or mortality.

Other information

This disease is known as Phomopsis canker because the asexual stage is more common, and was described prior to the discovery of the sexual stage (Diaporthe).