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Host Plants

Flower name confirmed
Flower name Likely

Gray Alder

Alnus incana

Red Alder

Alnus rubra

Quaking Aspen

Populus tremuloides

Chokecherry

Prunus virginiana

Gray Willow

Salix bebbiana

Grand Fir

Abies grandis

White Alder

Alnus rhombifolia

Pale Serviceberry

Amelanchier pallida

Service Berry

Amelanchier utahensis

California Wax Myrtle

Morella californica

Fremont Cottonwood

Populus fremontii

Fremont Cottonwood

Populus fremontii ssp. fremontii

Black Cottonwood

Populus trichocarpa

Bitter Cherry

Prunus emarginata

Hollyleaf Cherry

Prunus ilicifolia

Klamath Plum

Prunus subcordata

Western Chokecherry

Prunus virginiana var. demissa

Sandbar Willow

Salix exigua

Sandbar Willow

Salix exigua var. hindsiana

Goodding's Black Willow

Salix gooddingii

Coastal Willow

Salix hookeriana

Red Willow

Salix laevigata

Shining Willow

Salix lasiandra

Yellow Willow

Salix lasiandra var. lasiandra

Arroyo Willow

Salix lasiolepis

Yellow Willow

Salix lutea

Dusky Willow

Salix melanopsis

Scouler's Willow

Salix scouleriana

Sitka Willow

Salix sitchensis

Common Viburnum

Viburnum ellipticum

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