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Elytroderma needle cast is a systemic foliar disease that affects a number of pine species in North America. This publication deals exclusively with the signs, symptoms, and effects of Elytroderma needle cast on lodgepole pine in British Columbia and its management recommendations. Elytroderma needle cast, caused by the fungus Elytroderma deformans, is a foliage disease that affects lodgepole pine (Pinus contorta var. latifolia) and ponderosa pine (Pinus ponderosa) in British Columbia. Most of the literature on Elytroderma needle cast refers to the disease on ponderosa pine. It is not known if there are host-specific subspecies of Elytroderma, but many of the signs and symptoms of the diseases are similar on both pine species. Elytroderma needle cast is fairly easy to recognize on ponderosa pine because it causes large brooms. In contrast, Elytroderma on lodgepole pine often goes unrecognized or is confused with Lophodermella concolor (another common needle cast) or lodgepole pine dwarf mistletoe (Arceuthobium americanum).
David Rusch. 2020. Elytroderma needle cast on lodgepole pine in British Columbia. FLNRORD. Land Management Handbook (FLNRORD). LMH74
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