Mountain Snowberry
Symphoricarpos rotundifolius var. rotundifolius
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Long Leaved Aster
Symphyotrichum ascendens
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Eaton's Aster
Symphyotrichum bracteolatum
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Western Meadow Aster
Symphyotrichum campestre
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California Aster
Symphyotrichum chilense
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Dwarf Coast Aster
Symphyotrichum chilense 'Dwarf'
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Point St George Aster
Symphyotrichum chilense 'Point Saint George'
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Purple Haze Coast Aster
Symphyotrichum chilense 'Purple Haze'
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San Bernardino Aster
Symphyotrichum defoliatum
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Leafy Aster
Symphyotrichum foliaceum
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Parry's Leafy Aster
Symphyotrichum foliaceum var. apricum
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Parry's Aster
Symphyotrichum foliaceum var. parryi
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Short-rayed Alkali Aster
Symphyotrichum frondosum
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Greata's Aster
Symphyotrichum greatae
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Henderson's Aster
Symphyotrichum hendersonii
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Panicled Aster
Symphyotrichum lanceolatum
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Western Lance Leaf Aster
Symphyotrichum lanceolatum var. hesperium
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Suisun Marsh Aster
Symphyotrichum lentum
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Western Mountain Aster
Symphyotrichum spathulatum
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Symphyotrichum spathulatum var. intermedium
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Western Mountain Aster
Symphyotrichum spathulatum var. spathulatum
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Western Bog Aster
Symphyotrichum spathulatum var. yosemitanum
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Douglas Aster
Symphyotrichum subspicatum
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Eastern Annual Saltmarsh Aster
Symphyotrichum subulatum
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Saltmarsh Aster
Symphyotrichum subulatum var. parviflorum
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Snowqueen
Synthyris cordata
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Tailed Kittentails
Synthyris missurica
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Kittentail
Synthyris missurica ssp. missurica
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Snowqueen
Synthyris reniformis
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Fremont's-gold
Syntrichopappus fremontii
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Lemmon's Syntrichopappus
Syntrichopappus lemmonii
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Vortriede's Spineflower
Systenotheca vortriedei
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Dune Tansy
Tanacetum bipinnatum
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California Dandelion
Taraxacum californicum
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Horned Dandelion
Taraxacum ceratophorum
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Sun Cup
Taraxia ovata
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Diffuseflower Evening Primrose
Taraxia subacaulis
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Tansyleaf Evening Primrose
Taraxia tanacetifolia
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Southern Tauschia
Tauschia arguta
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Glaucous Tauschia
Tauschia glauca
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Tauschia
Tauschia hartwegii
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Howell's Tauschia
Tauschia howellii
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Kellogg's Umbrellawort
Tauschia kelloggii
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Parish's Umbrellawort
Tauschia parishii
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Pacific Yew
Taxus brevifolia
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Bigflower Tellima
Tellima grandiflora
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Parry's Tetracoccus
Tetracoccus dioicus
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Hall's Tetracoccus
Tetracoccus hallii
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Holly-leaved Tetracoccus
Tetracoccus ilicifolius
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Striped Horsebrush
Tetradymia argyraea
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Cotton Catclaw
Tetradymia axillaris
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Longspine Horsebrush
Tetradymia axillaris var. axillaris
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Longspine Horsebrush
Tetradymia axillaris var. longispina
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Spineless Horsebrush
Tetradymia canescens
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Hairy Horsebrush
Tetradymia comosa
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Littleleaf Horsebrush
Tetradymia glabrata
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Shortspine Horsebrush
Tetradymia spinosa
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Mojave Cottonthorn
Tetradymia stenolepis
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Dune Horsebrush
Tetradymia tetrameres
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Stemless Four Nerve Daisy
Tetraneuris acaulis