Foothill Sunburst
Pseudobahia heermannii
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San Joaquin Adobe Sunburst
Pseudobahia peirsonii
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Fragrant Everlasting
Pseudognaphalium beneolens
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Bicolored Everlasting
Pseudognaphalium biolettii
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California Cudweed
Pseudognaphalium californicum
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Wright's Cudweed
Pseudognaphalium canescens
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White Rabbit-tobacco
Pseudognaphalium leucocephalum
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Macoun's Everlasting
Pseudognaphalium macounii
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Wright's Cudweed
Pseudognaphalium microcephalum
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Pink Cudweed
Pseudognaphalium ramosissimum
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Rosy Cudweed
Pseudognaphalium roseum
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Chilean Cudweed
Pseudognaphalium stramineum
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Pseudognaphalium thermale
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Deep Canyon Snapdragon
Pseudorontium cyathiferum
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Stream Trillium
Pseudotrillium rivale
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Bigcone Douglas Fir
Pseudotsuga macrocarpa
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Douglas Fir
Pseudotsuga menziesii
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Coast Douglas Fir
Pseudotsuga menziesii var. menziesii
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Short Woollyheads
Psilocarphus brevissimus
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Dwarf Woollyheads
Psilocarphus brevissimus var. brevissimus
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Delta Woolly-marbles
Psilocarphus brevissimus var. multiflorus
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Round Woolly-marbles
Psilocarphus chilensis
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Tall Woolly-marbles
Psilocarphus elatior
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Oregon Woollyheads
Psilocarphus oregonus
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Slender Woolly-marbles
Psilocarphus tenellus
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Paperflower
Psilostrophe cooperi
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California Dalea
Psorothamnus arborescens
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Mojave Indigo-bush
Psorothamnus arborescens var. arborescens
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California Dalea
Psorothamnus arborescens var. californicus
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Johnson False Dalea
Psorothamnus arborescens var. minutifolius
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Dyebush
Psorothamnus emoryi
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Fremont's Dalea
Psorothamnus fremontii
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Narrow-leaved Psorothamnus
Psorothamnus fremontii var. attenuatus
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Fremont's Indigo-bush
Psorothamnus fremontii var. fremontii
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Nevada Dalea
Psorothamnus polydenius
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Schott Indigobush
Psorothamnus schottii
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Smoke Tree
Psorothamnus spinosus
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Western Hoptree
Ptelea crenulata
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Western Bracken Fern
Pteridium aquilinum
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Hairy Brackenfern
Pteridium aquilinum var. pubescens
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Pine Drops
Pterospora andromedea
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Woodland Threadstem
Pterostegia drymarioides
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Howell's Alkali Grass
Puccinellia howellii
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Lemmon's Alkali Grass
Puccinellia lemmonii
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Alaska Alkali Grass
Puccinellia nutkaensis
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Nuttall's Alkali Grass
Puccinellia nuttalliana
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Parish's Alkali Grass
Puccinellia parishii
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Dwarf Alkali Grass
Puccinellia pumila
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California Alkaligrass
Puccinellia simplex
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Mexican Cliffrose
Purshia mexicana
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Stansbury's Antelope Brush
Purshia stansburyana
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Antelope Bitterbrush
Purshia tridentata
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Desert Bitterbrush
Purshia tridentata var. glandulosa
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Antelope Bitterbrush
Purshia tridentata var. tridentata
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Mountain Mint
Pycnanthemum californicum
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Leafless Wintergreen
Pyrola aphylla
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Liverleaf Wintergreen
Pyrola asarifolia
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Bog Wintergreen
Pyrola asarifolia ssp. asarifolia
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Long-bracted Wintergreen
Pyrola asarifolia ssp. bracteata
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Cryptic Wintergreen
Pyrola crypta