Californian Amaranth
Amaranthus californicus
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Fringed Amaranth
Amaranthus fimbriatus
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Palmer's Amaranth
Amaranthus palmeri
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Powell's Amaranth
Amaranthus powellii
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Torrey's Amaranth
Amaranthus torreyi
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Watson's Amaranth
Amaranthus watsonii
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Annual Bursage
Ambrosia acanthicarpa
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Ambrosia Bursage
Ambrosia ambrosioides
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Beach Bur
Ambrosia chamissonis
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San Diego Bursage
Ambrosia chenopodiifolia
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Weakleaf Bur Ragweed
Ambrosia confertiflora
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White Bursage
Ambrosia dumosa
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Woolly Bur-sage
Ambrosia eriocentra
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Holly-leaved Bur-sage
Ambrosia ilicifolia
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Singlewhorl Burrobrush
Ambrosia monogyra
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Western Ragweed
Ambrosia psilostachya
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San Diego Ambrosia
Ambrosia pumila
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Cheesebush
Ambrosia salsola
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Five-scaled Burrobrush
Ambrosia salsola var. pentalepis
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Burrobrush
Ambrosia salsola var. salsola
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Western Serviceberry
Amelanchier alnifolia
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Glabrous Serviceberry
Amelanchier alnifolia var. pumila
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Pacific Serviceberry
Amelanchier alnifolia var. semiintegrifolia
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Pale Serviceberry
Amelanchier pallida
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Service Berry
Amelanchier utahensis
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California False Indigo
Amorpha californica
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California False Indigo
Amorpha californica var. californica
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Napa False Indigo
Amorpha californica var. napensis
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Western False Indigo
Amorpha fruticosa
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Fremont's Chaffbush
Amphipappus fremontii
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Fremont's Chaffbush
Amphipappus fremontii var. fremontii
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Fremont's Chaffbush
Amphipappus fremontii var. spinosus
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Great Basin Bulrush
Amphiscirpus nevadensis
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Douglas' Fiddleneck
Amsinckia douglasiana
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Eastwood's Fiddleneck
Amsinckia eastwoodiae
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Forked Fiddleneck
Amsinckia furcata
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Large-flowered Fiddleneck
Amsinckia grandiflora
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Common Fiddleneck
Amsinckia intermedia
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Bent Flowered Fiddleneck
Amsinckia lunaris
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Bugloss-flowered Fiddleneck
Amsinckia lycopsoides
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Menzies' Fiddleneck
Amsinckia menziesii
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Rigid Fiddleneck
Amsinckia retrorsa
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Seaside Fiddleneck
Amsinckia spectabilis
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Mesa Fiddleneck
Amsinckia spectabilis var. microcarpa
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Seaside Fiddleneck
Amsinckia spectabilis var. spectabilis
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Fiddleneck
Amsinckia tessellata
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Carrizo Fiddleneck
Amsinckia tessellata var. gloriosa
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Desert Fiddleneck
Amsinckia tessellata var. tessellata
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Green Fiddleneck
Amsinckia vernicosa
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Griswold Hills Green Fiddleneck
Amsinckia vernicosa 'Griswold Hills'
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Pearly Everlasting
Anaphalis margaritacea
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Bushy Bluestem
Andropogon glomeratus
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Southwestern Bushy Bluestem
Andropogon glomeratus var. scabriglumis
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California Rockjasmine
Androsace elongata
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California Androsace
Androsace elongata ssp. acuta
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Western Rock-jasmine
Androsace occidentalis
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Pygmyflower Rockjasmine
Androsace septentrionalis
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Angelica
Angelica arguta
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Brewer's Angelica
Angelica breweri
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California Angelica
Angelica californica