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FPL - 27 Elytroderma Disease

The information accessed from this screen is based on the publication: Hunt, R. S. 1978. Elytroderma Disease of Pines. Forestry Canada, Forest Insect and Disease Survey, Forest Pest Leaflet No. 27 4p.

Introduction

Elytroderma disease is caused by the ascomycetous fungus, Elytroderma deformans (Weir) Darker which is a member of the Hypodermataceae, the needle cast fungi, which attack a particular year of foliage. The infected increment of foliage dies, produces fungus fruiting structures and is cast from the tree. This fungus is even more conspicuous than most of the group because on certain hosts it may invade the branches and cause perennial brooms.

Elytroderma disease has, in recent years, been epidemic in western North America on ponderosa pine, causing considerable economic loss.

For more information, see the Elytroderma Disease Forest Pest Leaflet in the Canadian Forest Service bookstore.