Elk's Clover
Aralia californica
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Chamisso Arnica
Arnica chamissonis
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Streambank Arnica
Arnica lanceolata ssp. prima
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Mountain Arnica
Arnica latifolia
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Seep Spring Arnica
Arnica longifolia
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Cordillerean Anica
Arnica mollis
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Silver Sagebrush
Artemisia cana
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Silver Sagebrush
Artemisia cana ssp. bolanderi
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Silver Surfer Mugwort
Artemisia douglasiana 'Silver Surfer'
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Parish's Pickleweed
Arthrocnemum subterminale
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Bride's Feathers
Aruncus dioicus
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Goats Beard
Aruncus dioicus var. acuminatus
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Lemmon's Wild Ginger
Asarum lemmonii
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Narrow Leaf Milkweed
Asclepias fascicularis
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Davis Showy Milkweed
Asclepias speciosa 'Davis'
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Silverleaf Milkvetch
Astragalus argophyllus
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Shorttooth Canadian Milkvetch
Astragalus canadensis var. brevidens
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Horn's Milkvetch
Astragalus hornii
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Spotted Locoweed
Astragalus lentiginosus
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Preuss Milkvetch
Astragalus preussii
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Marsh Milkvetch
Astragalus pycnostachyus
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Alkali Milkvetch
Astragalus tener
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Common Ladyfern
Athyrium filix-femina
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Lady Fern
Athyrium filix-femina var. cyclosorum
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Silver Saltweed
Atriplex argentea
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Silverscale Saltbush
Atriplex argentea var. argentea
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Silverscale
Atriplex argentea var. expansa
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Shadscale
Atriplex canescens
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Heartscale
Atriplex cordulata
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Crownscale
Atriplex coronata
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Ballscale
Atriplex fruticulosa
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Sickle Saltbush
Atriplex gardneri var. falcata
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Naomi Big Salt Bush
Atriplex lentiformis 'Naomi'
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Big Saltbush
Atriplex lentiformis ssp. lentiformis
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Seascale
Atriplex leucophylla
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Parry's Saltbush
Atriplex parryi
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Spear Orache
Atriplex patula
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Cattle Saltbush
Atriplex polycarpa
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Tractscale
Atriplex serenana
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Bractscale
Atriplex serenana var. serenana
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Mojave Saltbush
Atriplex spinifera
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Wedgescale
Atriplex truncata
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Matscale
Atriplex watsonii
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Mosquito Fern
Azolla filiculoides
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Saltmarsh Baccharis
Baccharis glutinosa
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Emory's Baccharis
Baccharis salicina
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Broom Baccharis
Baccharis sarothroides
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Gila River Water Hyssop
Bacopa eisenii
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American Wintercress
Barbarea orthoceras
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Saltwort
Batis maritima
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Sloughgrass
Beckmannia syzigachne
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Bensoniella
Bensoniella oregona
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Texas Bergia
Bergia texana
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Cutleaf Waterparsnip
Berula erecta
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Resin Birch
Betula glandulosa
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Water Birch
Betula occidentalis
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Nodding Bur-marigold
Bidens cernua
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Sticktight
Bidens frondosa
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Bur Marigold
Bidens laevis
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Western Bistort
Bistorta bistortoides