Polk County

Showing 601–650 of 971.

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  Oxalis suksdorfii Trel. Native OXSU

  Suksdorf woodsorrel · Oxalidaceae
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  Packera bolanderi (A. Gray) W.A. Weber & Á. Löve Native PABO6

  Bolander's ragwort · Asteraceae
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  Packera bolanderi (A. Gray) W.A. Weber & Á. Löve var. bolanderi Native PABOB

  Bolander's ragwort · Asteraceae
• 
  Packera pseudaurea (Rydb.) W.A. Weber & Á. Löve Native PAPS5

  falsegold groundsel · Asteraceae
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  Packera pseudaurea (Rydb.) W.A. Weber & Á. Löve var. pseudaurea Native PAPSP2

  falsegold groundsel · Asteraceae
• 
  Panicum capillare L. Native PACA6

  witchgrass · Poaceae
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  Panicum miliaceum L. Introduced PAMI2

  proso millet · Poaceae
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  Panicum miliaceum L. ssp. miliaceum Introduced PAMIM

  broomcorn millet · Poaceae
• 
  Parentucellia viscosa (L.) Caruel Introduced PAVI3

  yellow glandweed · Scrophulariaceae
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  Pastinaca sativa L. Introduced PASA2

  wild parsnip · Apiaceae
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  Paxistima myrsinites (Pursh) Raf. Native PAMY

  Oregon boxleaf · Celastraceae
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  Pennisetum setaceum (Forssk.) Chiov. Introduced PESE3

  crimson fountaingrass · Poaceae
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  Pentaglottis sempervirens (L.) Tausch ex L.H. Bailey Introduced PESE10

  evergreen bugloss · Boraginaceae
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  Pentagramma triangularis (Kaulf.) Yatsk., Windham & E. Wollenw. Native PETR7

  goldback fern · Pteridaceae
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  Pentagramma triangularis (Kaulf.) Yatsk., Windham & E. Wollenw. ssp. triangularis Native PETRT

  goldback fern · Pteridaceae
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  Perideridia gairdneri (Hook. & Arn.) Mathias Native PEGA3

  Gardner's yampah · Apiaceae
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  Perideridia gairdneri (Hook. & Arn.) Mathias ssp. borealis T.I. Chuang & Constance Native PEGAB

  common yampah · Apiaceae
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  Perideridia oregana (S. Watson) Mathias Native PEOR6

  Oregon yampah · Apiaceae
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  Petasites frigidus (L.) Fr. Native PEFR5

  arctic sweet coltsfoot · Asteraceae
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  Petasites frigidus (L.) Fr. var. palmatus (Aiton) Cronquist Native PEFRP

  arctic sweet coltsfoot · Asteraceae
• 
  Phacelia mutabilis Greene Native PHMU2

  changeable phacelia · Hydrophyllaceae
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  Phacelia nemoralis Greene Native PHNE2

  shade phacelia · Hydrophyllaceae
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  Phacelia nemoralis Greene ssp. oregonensis Heckard Native PHNEO

  Oregon phacelia · Hydrophyllaceae
• 
  Phalaris arundinacea L. Native PHAR3

  reed canarygrass · Poaceae
• 
  Phalaris canariensis L. Introduced PHCA5

  annual canarygrass · Poaceae
• 
  Philadelphus lewisii Pursh Native PHLE4

  Lewis' mock orange · Hydrangeaceae
• 
  Phleum pratense L. Introduced PHPR3

  timothy · Poaceae
• 
  Phlox speciosa Pursh Native PHSP

  showy phlox · Polemoniaceae
• 
  Phoradendron villosum (Nutt.) Nutt. Native PHVI9

  Pacific mistletoe · Viscaceae
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  Physocarpus capitatus (Pursh) Kuntze Native PHCA11

  Pacific ninebark · Rosaceae
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  Pinus monticola Douglas ex D. Don Native PIMO3

  western white pine · Pinaceae
• 
  Pinus ponderosa Lawson & C. Lawson Native PIPO

  ponderosa pine · Pinaceae
• 
  Pinus ponderosa Lawson & C. Lawson var. benthamiana (Hartw.) Vasey Native PIPOB2

  ponderosa pine · Pinaceae
• 
  Pinus ponderosa Lawson & C. Lawson var. ponderosa C. Lawson Native PIPOP

  ponderosa pine · Pinaceae
• 
  Piperia transversa Suksd. Native PITR3

  royal rein orchid · Orchidaceae
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  Plagiobothrys figuratus (Piper) I.M. Johnst. ex M. Peck Native PLFI

  fragrant popcornflower · Boraginaceae
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  Plagiobothrys scouleri (Hook. & Arn.) I.M. Johnst. Native PLSC2

  Scouler's popcornflower · Boraginaceae
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  Plagiobothrys scouleri (Hook. & Arn.) I.M. Johnst. var. scouleri Native PLSCS

  Scouler's popcornflower · Boraginaceae
• 
  Plantago lanceolata L. Introduced PLLA

  narrowleaf plantain · Plantaginaceae
• 
  Plantago major L. Introduced PLMA2

  common plantain · Plantaginaceae
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  Platanthera dilatata (Pursh) Lindl. ex Beck Native PLDI3

  scentbottle · Orchidaceae
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  Platanthera dilatata (Pursh) Lindl. ex Beck var. leucostachys (Lindl.) Luer Native PLDIL

  Sierra bog orchid · Orchidaceae
• 
  Plectritis congesta (Lindl.) DC. Native PLCO4

  shortspur seablush · Valerianaceae
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  Pleuricospora fimbriolata A. Gray Native PLFI2

  fringed pinesap · Monotropaceae
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  Pleuropogon refractus (A. Gray) Benth. ex Vasey Native PLRE2

  nodding semaphoregrass · Poaceae
• 
  Poa annua L. Introduced POAN

  annual bluegrass · Poaceae
• 
  Poa compressa L. Introduced POCO

  Canada bluegrass · Poaceae
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  Poa laxiflora Buckley Native POLA3

  looseflower bluegrass · Poaceae
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  Poa marcida Hitchc. Native POMA6

  withered bluegrass · Poaceae
• 
  Poa palustris L. Native POPA2

  fowl bluegrass · Poaceae