- California bay
- Picture 1
- Picture 2
- Picture 3
- Picture 4
- Picture 5
- California black oak
- California blackberry
- Picture 1
- Picture 2
- Picture 3
- Picture 4
- Picture 5
- California buckeye
- Picture 1 (leaves)
- Picture 2
- Picture 3
- Picture 4
- California buttercup
- Picture 1
- Picture 2
- Picture 3
- California button bush
- Picture 1
- Picture 2
- Picture 3
- California everlasting
- Picture 1
- Picture 2
- Picture 3
- California filago
- Picture 1
- Picture 2
- California fuchsia
- California hedge-parsley
- Picture 1
- Picture 2
- Picture 3
- Picture 4
- California honeysuckle
- Picture 1
- Picture 2
- Picture 3
- Picture 4
- Picture 5
- Picture 6
- Picture 7
- California huckleberry
- Picture 1
- Picture 2
- California milkwort
- Picture 1
- Picture 2
- Picture 3
- Picture 4
- California mugwort
- California poppy
- Picture 1
- Picture 2
- Picture 3
- California rose-bay
- Picture 1
- Picture 2
- Picture 3
- Picture 4
- Picture 5
- California sagebrush
- Picture 1
- Picture 2
- California scorpionweed
- Picture 1
- Picture 2
- Picture 3
- California tule
- Picture 1
- Picture 2
- Calypso orchid
- Picture 1
- Picture 2
- Picture 3
- Picture 4
- Picture 5
- Picture 6
- Picture 7
- Picture 8
- Picture 9
- Picture 10
- Picture 11
- Canyon oak
- Canyon pea
- Picture 1
- Picture 2
- Picture 3
- Carmel ceanothus
- Cat-tail
- Picture 1
- Picture 2
- Picture 3
- Centaurium
- Picture 1
- Picture 2
- Chamise
- Picture 1
- Picture 2
- Chaparral currant
- Picture 1
- Picture 2
- Picture 3
- Picture 4
- Picture 5
- Checker-bloom
- Picture 1
- Picture 2
- Picture 3
- Picture 4
- Cheeseweed
- Picture 1
- Picture 2
- Picture 3
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- Chia
- Picture 1
- Picture 2
- Picture 3
- Picture 4
- Picture 5
- Chick lupine
- Picture 1
- Picture 2
- Picture 3
- Picture 4
- Picture 5
- Picture 6
- Chicory
- Picture 1
- Picture 2
- Picture 3
- Chinese caps
- Picture 1
- Picture 2
- Picture 3
- Chinese houses
- Picture 1
- Picture 2
- Picture 3
- Picture 4
- Coast buckwheat
- Picture 1
- Picture 2
- Picture 3
- Coast eryngo
- Coast figwort
- Picture 1
- Picture 2
- Coast live oak
- Picture 1 (catkins)
- Picture 2
- Picture 3
- Coast redwood
- Picture 1
- Picture 2
- Coast rock cress
- Picture 1
- Picture 2
- Cobweb thistle
- Picture 1
- Picture 2
- Picture 3
- Coffee berry
- Picture 1
- Picture 2
- Coffee fern
- Common groundsel
- Picture 1
- Picture 2
- Common lomatium
- Picture 1
- Picture 2
- Common monkey flower
- Picture 1
- Picture 2
- Picture 3
- Common rush
- Picture 1
- Picture 2
- Common sow thistle
- Picture 1
- Picture 2
- Common sunflower
- Picture 1
- Picture 2
- Picture 3
- Common tule
- Common vetch
- Picture 1
- Picture 2
- Cow parsnip
- Picture 1
- Picture 2
- Picture 3
- Picture 4
- Picture 5
- Picture 6
- Picture 7
- Picture 8
- Coyote brush
- Picture 1
- Picture 2
- Cream bush
- Picture 1
- Picture 2
- Cream cups
- Picture 1
- Picture 2
- Picture 3
- Picture 4
- Picture 5
- Picture 6
- Creeping snowberry
- Picture 1 (leaves)
- Picture 2
- Crimson columbine
- Picture 1
- Picture 2
- Picture 3
- Picture 4
- Picture 5
- Cudweed
- Picture 1
- Picture 2
- Picture 3
- Picture 4
- Curly dock
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