American Wintercress
Barbarea orthoceras
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Saltwort
Batis maritima
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Sweetbush
Bebbia juncea
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Rough Sweetbush
Bebbia juncea var. aspera
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Sloughgrass
Beckmannia syzigachne
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Benitoa
Benitoa occidentalis
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Bensoniella
Bensoniella oregona
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Golden Abundance Oregon Grape
Berberis 'Golden Abundance'
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Skylark Barberry
Berberis 'Skylark'
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Tall Oregon Grape
Berberis aquifolium
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Piper's Barberry
Berberis aquifolium var. aquifolium
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Shining Netvein Barberry
Berberis aquifolium var. dictyota
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Dwarf Mahonia
Berberis aquifolium var. repens
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Compacta Oregon Grape
Berberis aquilifolium 'Compacta'
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Fremont Barberry
Berberis fremontii
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Red Fruited Mahonia
Berberis haematocarpa
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Kofa Mountain Barberry
Berberis harrisoniana
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Berberis higginsiae
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Oregon Grape
Berberis nervosa
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Nevin's Barberry
Berberis nevinii
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Coast Barberry
Berberis pinnata
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Ken Hartman California Barberry
Berberis pinnata 'Ken Hartman'
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Island Barberry
Berberis pinnata ssp. insularis
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California Barberry
Berberis pinnata ssp. pinnata
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Golden Spined Cereus
Bergerocactus emoryi
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Texas Bergia
Bergia texana
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Bernardia incana
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Cutleaf Waterparsnip
Berula erecta
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Resin Birch
Betula glandulosa
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Water Birch
Betula occidentalis
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Nodding Bur-marigold
Bidens cernua
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Sticktight
Bidens frondosa
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Bur Marigold
Bidens laevis
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Western Bistort
Bistorta bistortoides
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Sonoma Sunshine
Blennosperma bakeri
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Common Stickyseed
Blennosperma nanum
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Common Blennosperma
Blennosperma nanum var. nanum
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Point Reyes Blennosperma
Blennosperma nanum var. robustum
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King's Eyelash Grass
Blepharidachne kingii
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Rough Eyelash
Blepharipappus scaber
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Glandular Big Tarweed
Blepharizonia laxa
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Big Tarplant
Blepharizonia plumosa
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San Diego Goldenstar
Bloomeria clevelandii
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Common Goldenstar
Bloomeria crocea
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Golden Stars
Bloomeria crocea var. aurea
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Golden Stars
Bloomeria crocea var. crocea
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Mountain Goldenstar
Bloomeria crocea var. montana
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Dwarf Goldenstar
Bloomeria humilis
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Pointed Rockcress
Boechera acutina
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Arched Elegant Rock Cress
Boechera arcuata
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Bodie Hills Rockcress
Boechera bodiensis
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Brewer's Rock Cress
Boechera breweri
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Brewer's Rock Cress
Boechera breweri ssp. breweri
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Shasta Rockcress
Boechera breweri ssp. shastaensis
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Calder's Rockcress
Boechera calderi
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California Elegant Rock Cress
Boechera californica
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Masonic Rockcress
Boechera cobrensis
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Constance's Rockcress
Boechera constancei
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Coville's Rockcress
Boechera covillei
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Davidson's Rockcress
Boechera davidsonii