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Host Plants

Flower name confirmed
Flower name Likely

Vine Maple

Acer circinatum

Rocky Mountain Maple

Acer glabrum

Mountain Maple

Acer glabrum var. glabrum

Big Leaf Maple

Acer macrophyllum

Gray Alder

Alnus incana

Mountain Alder

Alnus incana ssp. tenuifolia

White Alder

Alnus rhombifolia

Red Alder

Alnus rubra

Green Alder

Alnus viridis

Sitka Alder

Alnus viridis ssp. sinuata

Western Serviceberry

Amelanchier alnifolia

Pacific Serviceberry

Amelanchier alnifolia var. semiintegrifolia

Pale Serviceberry

Amelanchier pallida

Service Berry

Amelanchier utahensis

Beaked Hazelnut

Corylus cornuta

California Hazel

Corylus cornuta ssp. californica

Ocean Spray

Holodiscus discolor

Holodiscus discolor var. discolor

Weeping Spruce

Picea breweriana

Sitka Spruce

Picea sitchensis

Black Cottonwood

Populus trichocarpa

Bitter Cherry

Prunus emarginata

Klamath Plum

Prunus subcordata

Chokecherry

Prunus virginiana

Western Chokecherry

Prunus virginiana var. demissa

Douglas Fir

Pseudotsuga menziesii

Coast Douglas Fir

Pseudotsuga menziesii var. menziesii

Canyon Live Oak

Quercus chrysolepis

Garry's Oak

Quercus garryana

Garry's Oak

Quercus garryana var. breweri

Oregon White Oak

Quercus garryana var. garryana

Black Oak

Quercus kelloggii

Deer Oak

Quercus sadleriana

Huckleberry Oak

Quercus vacciniifolia

California Wildrose

Rosa californica

Wood Rose

Rosa gymnocarpa

Gasquet Rose

Rosa gymnocarpa var. serpentina

Nootka Rose

Rosa nutkana

Nootka Rose

Rosa nutkana ssp. nutkana

Pine Rose

Rosa pinetorum

Swamp Rose

Rosa pisocarpa

Cluster

Rosa pisocarpa ssp. pisocarpa

Ground Rose

Rosa spithamea

Woods' Rose

Rosa woodsii

Western Raspberry

Rubus leucodermis

Thimbleberry

Rubus parviflorus

Salmon Berry

Rubus spectabilis

California Blackberry

Rubus ursinus

Del Norte Willow

Salix delnortensis

Sandbar Willow

Salix exigua

Sandbar Willow

Salix exigua var. hindsiana

Coastal Willow

Salix hookeriana

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

Western Hemlock

Tsuga heterophylla

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