Lassen Clarkia
Clarkia lassenensis
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Lewis' Clarkia
Clarkia lewisii
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Purple Clarkia
Clarkia purpurea
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Diamond Clarkia
Clarkia rhomboidea
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Ramona Clarkia
Clarkia similis
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Red Spotted Clarkia
Clarkia speciosa
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Elegant Clarkia
Clarkia unguiculata
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Gunsight Clarkia
Clarkia xantiana
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Gunsight Clarkia
Clarkia xantiana ssp. xantiana
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Serpentine Springbeauty
Claytonia exigua
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Serpentine Springbeauty
Claytonia exigua ssp. exigua
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Gypsum Springbeauty
Claytonia gypsophiloides
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Rooreh
Claytonia perfoliata
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Miner's Lettuce
Claytonia perfoliata ssp. intermontana
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Chaparral Clematis
Clematis lasiantha
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Virgin's Bower
Clematis ligusticifolia
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Small Leaved Clematis
Clematis pauciflora
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San Diego Yerba Buena
Clinopodium chandleri
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Yerba Buena
Clinopodium douglasii
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Monkey Flower Savory
Clinopodium mimuloides
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Bush Rue
Cneoridium dumosum
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Desert Mountain Blue-eyed Mary
Collinsia callosa
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White Collinsia
Collinsia concolor
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Greene's Blue-eyed Mary
Collinsia greenei
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Purple Chinese Houses
Collinsia heterophylla
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Purple Chinese Houses
Collinsia heterophylla var. heterophylla
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Parry's Blue Eyed Mary
Collinsia parryi
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Spinster's Blue-eyed Mary
Collinsia sparsiflora
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Sticky Chinese Houses
Collinsia tinctoria
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Large Flowered Collomia
Collomia grandiflora
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Variable-leaf Collomia
Collomia heterophylla
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Summer Holly
Comarostaphylis diversifolia
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Purple Marsh Cinquefoil
Comarum palustre
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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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Pringle's Bird's Beak
Cordylanthus pringlei
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Stiffbranch Bird's Beak
Cordylanthus rigidus
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Slender Bird's Beak
Cordylanthus tenuis
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Slender Bird's Beak
Cordylanthus tenuis ssp. tenuis
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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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Brown Dogwood
Cornus glabrata
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Western Dogwood
Cornus sericea ssp. occidentalis
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Beaked Hazelnut
Corylus cornuta
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California Hazel
Corylus cornuta ssp. californica
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Water Pygmyweed
Crassula aquatica
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Pygmy-weed
Crassula connata
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Alkali Weed
Cressa truxillensis
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Alderson's Rush-rose
Crocanthemum aldersonii
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Common Sun Rose
Crocanthemum scoparium
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Crocanthemum scoparium var. scoparium
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Crocanthemum scoparium var. vulgare
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Bisbee Peak Rush Rose
Crocanthemum suffrutescens
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California Croton
Croton californicus
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Cleveland's Cryptantha
Cryptantha clevelandii
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Flaccid Cryptantha
Cryptantha flaccida
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Napa Cryptantha
Cryptantha hispidula
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Common Cryptantha
Cryptantha intermedia