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confirmed
Likely
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Host Plants
confirmed LikelyQuaking Aspen
Populus tremuloides
Vine Maple
Acer circinatum
Big Leaf Maple
Acer macrophyllum
Box Elder
Acer negundo
Gray Alder
Alnus incana
Mountain Alder
Alnus incana ssp. tenuifolia
White Alder
Alnus rhombifolia
Red Alder
Alnus rubra
Black Cottonwood
Populus trichocarpa
Sandbar Willow
Salix exigua
Sandbar Willow
Salix exigua var. hindsiana
Coastal Willow
Salix hookeriana
Red Willow
Salix laevigata
Shining Willow
Salix lasiandra
Yellow Willow
Salix lasiandra var. lasiandra
Arroyo Willow
Salix lasiolepis
Dusky Willow
Salix melanopsis
Scouler's Willow
Salix scouleriana
Sitka Willow
Salix sitchensis
Tracy's Willow
Salix tracyi
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