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Host Plants

Flower name confirmed
Flower name Likely

Klamath Plum

Prunus subcordata

Douglas Fir

Pseudotsuga menziesii

Vine Maple

Acer circinatum

Rocky Mountain Maple

Acer glabrum

Rocky Mountain Maple

Acer glabrum var. diffusum

Mountain Maple

Acer glabrum var. glabrum

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

Water Birch

Betula occidentalis

Brown Dogwood

Cornus glabrata

Pacific Dogwood

Cornus nuttallii

Red Osier Dogwood

Cornus sericea

Western Dogwood

Cornus sericea ssp. occidentalis

Creek Dogwood

Cornus sericea ssp. sericea

Miner's Dogwood

Cornus sessilis

Crataegus castlegarensis

Black Hawthorn

Crataegus douglasii

Ocean Spray

Holodiscus discolor

Holodiscus discolor var. discolor

Desert Ocean Spray

Holodiscus discolor var. glabrescens

Little Leaf Creambush

Holodiscus discolor var. microphyllus

California Juniper

Juniperus californica

Common Juniper

Juniperus communis

Depressed Juniper

Juniperus communis var. depressa

Common Juniper

Juniperus communis var. saxatilis

Sierra Juniper

Juniperus grandis

Western Juniper

Juniperus occidentalis

Utah Juniper

Juniperus osteosperma

Osoberry

Oemleria cerasiformis

Sitka Spruce

Picea sitchensis

Narrow Leaved Cottonwood

Populus angustifolia

Fremont Cottonwood

Populus fremontii

Fremont Cottonwood

Populus fremontii ssp. fremontii

Quaking Aspen

Populus tremuloides

Black Cottonwood

Populus trichocarpa

Desert Peach

Prunus andersonii

Bitter Cherry

Prunus emarginata

Desert Range Almond

Prunus fasciculata

Prunus fasciculata var. fasciculata

Desert Apricot

Prunus fremontii

Hollyleaf Cherry

Prunus ilicifolia

Chokecherry

Prunus virginiana

Western Chokecherry

Prunus virginiana var. demissa

Coast Douglas Fir

Pseudotsuga menziesii var. menziesii

Bitter Gooseberry

Ribes amarum

Golden Currant

Ribes aureum

Golden Currant

Ribes aureum var. aureum

Stink Currant

Ribes bracteosum

Hillside Gooseberry

Ribes californicum

Hillside Gooseberry

Ribes californicum var. californicum

Wax Currant

Ribes cereum

Wax Currant

Ribes cereum var. cereum

Spreading Gooseberry

Ribes divaricatum

Straggly Gooseberry

Ribes divaricatum var. pubiflorum

Whitestem Gooseberry

Ribes inerme

Whitestem Gooseberry

Ribes inerme var. inerme

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