- Baby blue eyes
- Picture 1
- Picture 2
- Picture 3
- Picture 4
- Picture 5
- Picture 6
- Picture 7
- Picture 8
- Picture 9
- Picture 10
- Balsam-root
- Barberry
- Barnaby's thistle
- Bassia
- Beach bur
- Picture 1
- Picture 2
- Picture 3
- Picture 4
- Beach morning glory
- Picture 1
- Picture 2
- Picture 3
- Beach primrose
- Picture 1
- Picture 2
- Picture 3
- Picture 4
- Picture 5
- Beach sand verbena
- Picture 1
- Picture 2
- Beardless wheat
- Beavertail cactus
- Picture 1
- Picture 2
- Bedstraw
- Picture 1
- Picture 2
- Beggar ticks
- Picture 1
- Picture 2 (fruits)
- Bellardia
- Picture 1
- Picture 2
- Picture 3
- Bermuda buttercup
- Picture 1
- Picture 2
- Picture 3
- Picture 4
- Bermuda grass
- Picture 1
- Picture 2
- Big berry manzanita
- Big leaf maple
- Picture 1
- Picture 2
- Picture 3
- Picture 4
- Picture 5
- Picture 6
- Big pod ceanothus
- Picture 1
- Picture 2
- Picture 3
- Picture 4
- Picture 5
- Big saltbush
- Picture 1
- Picture 2
- Picture 3
- Picture 4
- Bindweed
- Picture 1
- Picture 2
- Picture 3
- Picture 4
- Picture 5
- Picture 6
- Picture 7
- Picture 8
- Bird's beak
- Picture 1
- Picture 2
- Bird's eyes
- Picture 1
- Picture 2
- Bird's-foot trefoil
- Picture 1
- Picture 2
- Picture 3
- Bitter gooseberry
- Picture 1
- Picture 2
- Picture 3 (fruits)
- Picture 4
- Picture 5 (berries)
- Bitter root
- Picture 1
- Picture 2
- Picture 3
- Picture 4
- Picture 5
- Picture 6
- Black cottonwood
- Picture 1
- Picture 2
- Black mustard
- Picture 1
- Picture 2
- Black sage
- Picture 1
- Picture 2 (leaves)
- Bladderpod
- Picture 1
- Picture 2
- Blazing star
- Picture 1
- Picture 2
- Picture 3
- Picture 4
- Picture 5
- Picture 6
- Bleeding heart
- Blochman's dudleya
- Picture 1
- Picture 2
- Picture 3
- Picture 4
- Picture 5
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- Blow-wives (fruiting head)
- Blue blossom
- Picture 1
- Picture 2
- Picture 3
- Picture 4
- Picture 5
- Blue elderberry
- Picture 1
- Picture 2
- Blue grass
- Blue oak
- Picture 1
- Picture 2
- Blue toadflax
- Blue wild rye
- Blue witch
- Picture 1
- Picture 2
- Picture 3
- Picture 4
- Blue-eyed grass
- Picture 1
- Picture 2
- Picture 3
- Picture 4
- Picture 5
- Blue-field gilia
- Picture 1
- Picture 2
- Picture 3
- Branching phacelia
- Picture 1
- Picture 2
- Picture 3
- Picture 4
- Brandegee's sage (Rare)
- Brass buttons
- Picture 1
- Picture 2
- Braunton's milkvetch
- Picture 1 (Rare)
- Picture 2 (Rare)
- Picture 3 (Rare)
- Picture 4 (Rare)
- Brewer's red-maids
- Brewer's senecio
- Brickellbush
- Picture 1
- Picture 2
- Picture 3
- Bristly ox-tongue
- Picture 1
- Picture 2
- Picture 3
- Picture 4
- Brodiaea
- Broom-rape
- Buckbrush
- Picture 1
- Picture 2
- Picture 3
- Picture 4
- Picture 5
- Picture 6
- Picture 7
- Picture 8
- Picture 9
- Picture 10
- Bull mallow
- Picture 1
- Picture 2
- Picture 3
- Picture 4
- Bull thistle
- Picture 1
- Picture 2
- Picture 3
- Bur clover
- Bush anemone
- Picture 1
- Picture 2
- Picture 3
- Picture 4
- Bush lupine
- Picture 1
- Picture 2
- Picture 3
- Picture 4
- Picture 5
- Picture 6
- Picture 7
- Picture 8
- Bush mallow
- Picture 1
- Picture 2
- Picture 3
- Bush monkey flower
- Picture 1
- Picture 2
- Picture 3
- Picture 4 (Santa Cruz Island)
- Picture 5
- Bush poppy
- Picture 1
- Picture 2
- Picture 3
- Picture 4
- Bushrue
- Picture 1
- Picture 2
- Picture 3
- Picture 4
- Picture 5
- Picture 6
- Butterfly mariposa
- Picture 1
- Picture 2
- Picture 3
- Picture 4
- Picture 5
- Picture 6
- Picture 7
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