King Bladderpod
Physaria kingii
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San Bernardino Mountains Bladderpod
Physaria kingii ssp. bernardina
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Physaria kingii ssp. kingii
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King Bladderpod
Physaria kingii ssp. latifolia
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Silver Bladderpod
Physaria ludoviciana
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Western Bladderpod
Physaria occidentalis
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Western Bladderpod
Physaria occidentalis ssp. occidentalis
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Moapa Bladderpod
Physaria tenella
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Nevada Ninebark
Physocarpus alternans
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Pacific Ninebark
Physocarpus capitatus
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Siskiyou Beauty Ninebark
Physocarpus capitatus 'Siskiyou Beauty'
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Tilden Park Ninebark
Physocarpus capitatus 'Tilden Park'
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Weeping Spruce
Picea breweriana
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Engelmann Spruce
Picea engelmannii
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Sitka Spruce
Picea sitchensis
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Chaparral Pea
Pickeringia montana
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Montana Chaparral Pea
Pickeringia montana var. montana
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Woolly Chaparral Pea
Pickeringia montana var. tomentosa
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Picradeniopsis multiflora
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Thurber's Pilostyles
Pilostyles thurberi
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American Pillwort
Pilularia americana
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Horned Butterwort
Pinguicula macroceras
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Dwarf Pine
Pinus albicaulis
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Knobcone Pine
Pinus attenuata
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Foxtail Pine
Pinus balfouriana
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Foxtail Pine
Pinus balfouriana ssp. austrina
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Foxtail Pine
Pinus balfouriana ssp. balfouriana
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Lodgepole Pine
Pinus contorta
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Bolander's Beach Pine
Pinus contorta ssp. bolanderi
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Shore Pine
Pinus contorta ssp. contorta
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Tamarack Pine
Pinus contorta ssp. murrayana
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Coulter Pine
Pinus coulteri
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Twoneedle Pinyon
Pinus edulis
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Limber Pine
Pinus flexilis
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Jeffrey Pine
Pinus jeffreyi
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Sugar Pine
Pinus lambertiana
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Hickory Pine
Pinus longaeva
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Oneneedle Pinyon Pine
Pinus monophylla
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Singleleaf Pinyon
Pinus monophylla var. monophylla
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Western White Pine
Pinus monticola
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Bishop Pine
Pinus muricata
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Ponderosa Pine
Pinus ponderosa
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Pacific Ponderosa Pine
Pinus ponderosa var. pacifica
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North Plateau Ponderosa Pine
Pinus ponderosa var. ponderosa
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Washoe Pine
Pinus ponderosa var. washoensis
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Parry Pinyon Pine
Pinus quadrifolia
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Monterey Pine
Pinus radiata
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Foothill Pine
Pinus sabiniana
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Torrey Pine
Pinus torreyana
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Santa Rosa Isl. Torrey Pine
Pinus torreyana ssp. insularis
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Torrey Pine
Pinus torreyana ssp. torreyana
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White-flowered Rein-orchid
Piperia candida
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Coleman's Rein-orchid
Piperia colemanii
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Chaparral Rein-orchid
Piperia cooperi
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Elegant Piperia
Piperia elegans
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Point Reyes Rein-orchid
Piperia elegans ssp. decurtata
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Coast Piperia
Piperia elegans ssp. elegans
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Chaparral Orchid
Piperia elongata
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Narrow-petaled Rein-orchid
Piperia leptopetala
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Michael's Piperia
Piperia michaelii