Mexicali Onion
Allium peninsulare
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Early Onion
Allium praecox
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Congdon's Onion
Allium sanbornii var. congdonii
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Sanborn's Onion
Allium sanbornii var. sanbornii
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Jeweled Onion
Allium serra
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Rawhide Hill Onion
Allium tuolumnense
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Yosemite Onion
Allium yosemitense
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Purple False Gilyflower
Allophyllum divaricatum
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Dense False Gilyflower
Allophyllum gilioides
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Dense False Gilyflower
Allophyllum gilioides ssp. violaceum
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White Alder
Alnus rhombifolia
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Wright's Beebrush
Aloysia wrightii
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Annual Bursage
Ambrosia acanthicarpa
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Weakleaf Bur Ragweed
Ambrosia confertiflora
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Woolly Bur-sage
Ambrosia eriocentra
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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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Great Basin Bulrush
Amphiscirpus nevadensis
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Forked Fiddleneck
Amsinckia furcata
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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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Fiddleneck
Amsinckia tessellata
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Desert Fiddleneck
Amsinckia tessellata var. tessellata
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Green Fiddleneck
Amsinckia vernicosa
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Woolly Bluestar
Amsonia tomentosa
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Pearly Everlasting
Anaphalis margaritacea
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Woolly Fishhooks
Ancistrocarphus filagineus
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California Rockjasmine
Androsace elongata
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Tuber Anemone
Anemone tuberosa
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Low Pussytoes
Antennaria dimorpha
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Pinewoods Pussytoes
Antennaria geyeri
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Spurred Snapdragon
Antirrhinum cornutum
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Antirrhinum kingii
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Antirrhinum vexillocalyculatum ssp. breweri
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Lady's Mantle
Aphanes occidentalis
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Mock Parsley
Apiastrum angustifolium
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Bitter Dogbane
Apocynum androsaemifolium
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Indianhemp Dogbane
Apocynum cannabinum
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Van Houtte's Columbine
Aquilegia eximia
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Western Columbine
Aquilegia formosa
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Yellow Scarlet Columbine
Aquilegia formosa 'Yellow'
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Desert Columbine
Aquilegia shockleyi
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Holboell's Rock Cress
Arabis holboellii
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Elk's Clover
Aralia californica
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Pacific Madrone
Arbutus menziesii
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Bigberry Manzanita
Arctostaphylos glauca
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Los Angeles Bigberry Manzanita
Arctostaphylos glauca 'Los Angeles'
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Malibu Bigberry Manzanita
Arctostaphylos glauca 'Malibu'
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Margarita Pearl Bigberry Manzanita
Arctostaphylos glauca 'Margarita Pearl'
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Wayne's Dwarf Bigberry Manzanita
Arctostaphylos glauca 'Wayne's Dwarf'
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Hearst's Manzanita
Arctostaphylos hookeri ssp. hearstiorum
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Monterey Manzanita
Arctostaphylos hookeri ssp. hookeri
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Common Manzanita
Arctostaphylos manzanita
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Byrd Hill Manzanita
Arctostaphylos manzanita 'Byrd Hill'
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Dr. Hurd Manzanita
Arctostaphylos manzanita 'Dr. Hurd'
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Elizabeth Mcclintock Manzanita
Arctostaphylos manzanita 'Elizabeth Mcclintock'
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Mary's Blush Common Manzanita
Arctostaphylos manzanita 'Mary's Blush'
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St. Helena Manzanita
Arctostaphylos manzanita 'St. Helena'