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Miner's Lettuce

Claytonia perfoliata ssp. intermontana

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Chaparral Clematis

Clematis lasiantha

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Small Leaved Clematis

Clematis pauciflora

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Bladderpod

Cleomella arborea

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San Diego Yerba Buena

Clinopodium chandleri

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Monkey Flower Savory

Clinopodium mimuloides

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Bush Rue

Cneoridium dumosum

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Blackbrush

Coleogyne ramosissima

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White Collinsia

Collinsia concolor

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Purple Chinese Houses

Collinsia heterophylla

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Narrow Leaf Collinsia

Collinsia linearis

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Large Flowered Collomia

Collomia grandiflora

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Summer Holly

Comarostaphylis diversifolia ssp. planifolia

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Purple Marsh Cinquefoil

Comarum palustre

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Bitter Snakewood

Condalia globosa

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Desert Lavender

Condea emoryi

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Silver Lining Desert Lavender

Condea emoryi 'Silver Lining'

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Nevin's Woolly Sunflower

Constancea nevinii

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Canyon Silver Catalina Silverlace

Constancea nevinii 'Canyon Silver'

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Hairy Bird's Beak

Cordylanthus pilosus

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Hairy Bird's Beak

Cordylanthus pilosus ssp. pilosus

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California Aster

Corethrogyne filaginifolia

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Moss Landing Common Sandaster

Corethrogyne filaginifolia 'Moss Landing'

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Silver Carpet Aster

Corethrogyne filaginifolia 'Silver Carpet'

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Smart Aster Common Sandaster

Corethrogyne filaginifolia 'Smart Aster'

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Red Osier Dogwood

Cornus sericea

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Scrambled Eggs

Corydalis aurea

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Viviparous Foxtail Cactus

Coryphantha vivipara

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Black Hawthorn

Crataegus douglasii

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Klamath Hawthorn

Crataegus gaylussacia

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Modoc Hawksbeard

Crepis modocensis

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Alkali Weed

Cressa truxillensis

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Common Sun Rose

Crocanthemum scoparium

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Bisbee Peak Rush Rose

Crocanthemum suffrutescens

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Rock Crossosoma

Crossosoma bigelovii

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California Croton

Croton californicus

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Turkey Mullein

Croton setiger

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Flaccid Cryptantha

Cryptantha flaccida

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Beaked Cryptantha

Cryptantha rostellata

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Slender Cryptantha

Cryptantha sparsiflora

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Torrey's Cryptantha

Cryptantha torreyana

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Missouri Gourd

Cucurbita foetidissima

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Arizona Cypress

Cupressus arizonica

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Sacramento Waxydogbane

Cycladenia humilis

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Cycladenia

Cycladenia humilis var. humilis

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Cane Cholla

Cylindropuntia bernardina

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Jumping Cholla

Cylindropuntia bigelovii

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Golden Cholla

Cylindropuntia echinocarpa

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Coastal Cholla

Cylindropuntia prolifera

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Pencil Cholla

Cylindropuntia ramosissima

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Tall Flatsedge

Cyperus eragrostis

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Red Rooted Cyperus

Cyperus erythrorhizos

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False Nutsedge

Cyperus strigosus

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California Lady's Slipper

Cypripedium californicum

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California Oatgrass

Danthonia californica

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Timber Oatgrass

Danthonia intermedia

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Shrubby Cinquefoil

Dasiphora fruticosa

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Durango Root

Datisca glomerata

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Desert Thornapple

Datura discolor

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Sacred Datura

Datura wrightii