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confirmed
Likely
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Host Plants
confirmed LikelyRed Alder
Alnus rubra
Ocean Spray
Holodiscus discolor
Pacific Ninebark
Physocarpus capitatus
Gray Alder
Alnus incana
Mountain Alder
Alnus incana ssp. tenuifolia
White Alder
Alnus rhombifolia
Green Alder
Alnus viridis
Sitka Alder
Alnus viridis ssp. sinuata
Fremont Cottonwood
Populus fremontii
Fremont Cottonwood
Populus fremontii ssp. fremontii
Quaking Aspen
Populus tremuloides
Black Cottonwood
Populus trichocarpa
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