Tehipite Valley Jewelflower
Streptanthus fenestratus
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Metcalf Canyon Jewelflower
Streptanthus glandulosus
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Metcalf Canyon Jewelflower
Streptanthus glandulosus ssp. albidus
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Most Beautiful Jewel Flower
Streptanthus glandulosus ssp. glandulosus
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Hoffmann's Jewelflower
Streptanthus glandulosus ssp. hoffmanii
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Tiburon Jewelflower
Streptanthus glandulosus ssp. niger
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Mount Tamalpais Bristly Jewelflower
Streptanthus glandulosus ssp. pulchellus
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Secund Jewelflower
Streptanthus glandulosus ssp. secundus
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Uncommon Jewelflower
Streptanthus glandulosus ssp. sonomensis
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Alpine Jewelflower
Streptanthus gracilis
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Serpentine Jewelflower
Streptanthus hesperidis
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Mount Diablo Jewelflower
Streptanthus hispidus
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Howell's Jewelflower
Streptanthus howellii
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San Benito Jewelflower
Streptanthus insignis
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Plumed Jewelflower
Streptanthus insignis ssp. insignis
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Arburua Ranch Jewelflower
Streptanthus insignis ssp. lyonii
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Long-fruit Jewelflower
Streptanthus longisiliquus
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Morrison's Jewelflower
Streptanthus morrisonii
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Trinity River Jewelflower
Streptanthus oblanceolatus
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Masonic Mountain Jewelflower
Streptanthus oliganthus
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Milkwort Jewelflower
Streptanthus polygaloides
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Mountain Jewelflower
Streptanthus tortuosus
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Early Jewelflower
Streptanthus vernalis
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Streptanthus vimineus
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Claspleaf Twistedstalk
Streptopus amplexifolius
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Streptopus amplexifolius var. americanus
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Screwbean Mesquite
Strombocarpa pubescens
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Deer Fern
Struthiopteris spicant
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Fineleaf Pondweed
Stuckenia filiformis
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Slender-leaved Pondweed
Stuckenia filiformis ssp. alpina
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Pondweed
Stuckenia pectinata
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Nevada Pondweed
Stuckenia striata
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Leafcover Saltweed
Stutzia covillei
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Oil Neststraw
Stylocline citroleum
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Everlasting Neststraw
Stylocline gnaphaloides
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Mojave Neststraw
Stylocline intertexta
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Mason's Neststraw
Stylocline masonii
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Desert Neststraw
Stylocline micropoides
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Peck Neststraw
Stylocline psilocarphoides
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Mesquite Neststraw
Stylocline sonorensis
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California Snowdrop
Styrax redivivus
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Horned Seablite
Suaeda calceoliformis
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California Seablite
Suaeda californica
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Estuary Seablite
Suaeda esteroa
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Bush Seepweed
Suaeda nigra
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Western Seablite
Suaeda occidentalis
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Seablite
Suaeda taxifolia
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Water Awlwort
Subularia aquatica
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Water Awlwort
Subularia aquatica ssp. americana
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Eureka Valley Dune Grass
Swallenia alexandrae
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Star Swertia
Swertia perennis
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Common Snowberry
Symphoricarpos albus
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Snowberry
Symphoricarpos albus var. laevigatus
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San Bruno Mountain Snowberry
Symphoricarpos albus var. laevigatus 'San Bruno Mountain'
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Tilden Park Snowberry
Symphoricarpos albus var. laevigatus 'Tilden Park'
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Variegata Canyon Snowberry
Symphoricarpos albus var. laevigatus 'Variegata'
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Fragrant Snowberry
Symphoricarpos longiflorus
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Creeping Snowberry
Symphoricarpos mollis
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Roundleaf Snowberry
Symphoricarpos rotundifolius
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Parish's Snowberry
Symphoricarpos rotundifolius var. parishii