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Host Plants

Flower name confirmed
Flower name Likely

Gray Alder

Alnus incana

Red Osier Dogwood

Cornus sericea

Quaking Aspen

Populus tremuloides

Chokecherry

Prunus virginiana

Vine Maple

Acer circinatum

Rocky Mountain Maple

Acer glabrum

Mountain Maple

Acer glabrum var. glabrum

Big Leaf Maple

Acer macrophyllum

Box Elder

Acer negundo

Mountain Alder

Alnus incana ssp. tenuifolia

White Alder

Alnus rhombifolia

Red Alder

Alnus rubra

Western Serviceberry

Amelanchier alnifolia

Glabrous Serviceberry

Amelanchier alnifolia var. pumila

Pale Serviceberry

Amelanchier pallida

Service Berry

Amelanchier utahensis

Resin Birch

Betula glandulosa

Water Birch

Betula occidentalis

Arching Ceanothus

Ceanothus arcuatus

Rincon Ridge Ceanothus

Ceanothus confusus

Mountain Whitethorn

Ceanothus cordulatus

Buckbrush

Ceanothus cuneatus

Buckbrush

Ceanothus cuneatus var. cuneatus

Lompoc Ceanothus

Ceanothus cuneatus var. fascicularis

Buckbrush

Ceanothus cuneatus var. ramulosus

Sandscrub Ceanothus

Ceanothus dentatus

Calistoga Ceanothus

Ceanothus divergens

Pine Mat

Ceanothus diversifolius

Wavy Leaved Ceanothus

Ceanothus foliosus

Wavy Leaved Ceanothus

Ceanothus foliosus var. foliosus

La Cuesta Ceanothus

Ceanothus foliosus var. medius

Vine Hill Ceanothus

Ceanothus foliosus var. vineatus

Fresno Ceanothus

Ceanothus fresnensis

Point Reyes Ceanothus

Ceanothus gloriosus

Glory Brush

Ceanothus gloriosus var. exaltatus

Point Reyes Ceanothus

Ceanothus gloriosus var. gloriosus

Mt. Vision Ceanothus

Ceanothus gloriosus var. porrectus

Santa Barbara Ceanothus

Ceanothus impressus

Santa Barbara Ceanothus

Ceanothus impressus var. impressus

Nipomo Mesa Ceanothus

Ceanothus impressus var. nipomensis

Coast Whitethorn

Ceanothus incanus

Deerbrush

Ceanothus integerrimus

Deerbrush

Ceanothus integerrimus var. macrothyrsus

Jepson Ceanothus

Ceanothus jepsonii

Lemmon's Ceanothus

Ceanothus lemmonii

Chaparral Whitethorn

Ceanothus leucodermis

Mason's Ceanothus

Ceanothus masonii

Big Pod Ceanothus

Ceanothus megacarpus

Bigpod Ceanothus

Ceanothus megacarpus var. megacarpus

Hairy Ceanothus

Ceanothus oliganthus

Hairy Ceanothus

Ceanothus oliganthus var. oliganthus

Jim Brush

Ceanothus oliganthus var. sorediatus

Palmer Lilac

Ceanothus palmeri

Wartleaf Ceanothus

Ceanothus papillosus

Parry Ceanothus

Ceanothus parryi

Little Leaf Ceanothus

Ceanothus parvifolius

Kern Ceanothus

Ceanothus pinetorum

Pinemat

Ceanothus prostratus

Large Leaved Mahala Mat

Ceanothus prostratus var. prostratus

Dwarf Ceanothus

Ceanothus pumilus

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