Dwarf Sand Verbena
Abronia nana
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Mojave Sand-verbena
Abronia pogonantha
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Transmontane Sand-verbena
Abronia turbinata
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California Copperleaf
Acalypha californica
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San Benito Thorn Mint
Acanthomintha obovata
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Heart-leaved Thorn-mint
Acanthomintha obovata ssp. cordata
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Big Leaf Maple
Acer macrophyllum
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Box Elder
Acer negundo
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Blow Wives
Achyrachaena mollis
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American Bird's-foot Trefoil
Acmispon americanus
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Spanish Lotus
Acmispon americanus var. americanus
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Silver Bird's-foot Trefoil
Acmispon argophyllus
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Canyon Birdsfoot Trefoil
Acmispon argyraeus
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Foothill Deervetch
Acmispon brachycarpus
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Riverbar Birdsfoot Trefoil
Acmispon denticulatus
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Chaparral Lotus
Acmispon grandiflorus
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Woolly Lotus
Acmispon heermannii
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Coastal Lotus
Acmispon maritimus
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Smallflower Lotus
Acmispon parviflorus
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Silky California Broom
Acmispon procumbens
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Shrubby Deervetch
Acmispon rigidus
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Hairy Lotus
Acmispon strigosus
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Chilean Bird's-foot Trefoil
Acmispon wrangelianus
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Western Houndstongue
Adelinia grandis
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Southern Maiden Hair
Adiantum capillus-veneris
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Banksianum Maidenhair Fern
Adiantum capillus-veneris 'Banksianum'
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California Maiden Hair Fern
Adiantum jordanii
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California Buckeye
Aesculus californica
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Buckeye Blushing Dawn
Aesculus californica 'Blushing Dawn'
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Canyon Pink California Buckeye
Aesculus californica 'Canyon Pink'
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Small-leaf Giant Hyssop
Agastache parvifolia
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Nettle Leaf Giant Hyssop
Agastache urticifolia
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Clark Mountain Agave
Agave utahensis
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Desert Ageratina
Ageratina herbacea
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Pale Dandelion
Agoseris glauca
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California Dandelion
Agoseris grandiflora
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Agoseris grandiflora var. leptophylla
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Annual Agoseris
Agoseris heterophylla
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Agoseris heterophylla var. cryptopleura
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Agoseris heterophylla var. heterophylla
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Spike Bentgrass
Agrostis exarata
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Oregon Redtop
Agrostis oregonensis
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Thingrass
Agrostis pallens
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Camp Pendelton Bent Grass
Agrostis pallens 'Camp Pendelton'
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Sand Aliciella
Aliciella leptomeria
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Dainty Aliciella
Aliciella micromeria
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Narrow Leaved Onion
Allium amplectens
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Graceful Beauty Narrow Leaved Onion
Allium amplectens 'Graceful Beauty'
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Dark Red Onion
Allium atrorubens
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Bolander's Onion
Allium bolanderi
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Sierra Onion
Allium campanulatum
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Cascade Onion
Allium cratericola
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Crinkled Onion
Allium crispum
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Scytheleaf Onion
Allium falcifolium
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Fringed Onion
Allium fimbriatum
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Purdy's Onion
Allium fimbriatum var. purdyi
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Howell's Onion
Allium howellii
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Glassy Onion
Allium hyalinum
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Jepson's Onion
Allium jepsonii
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Pitted Onion
Allium lacunosum