Oregon

• Baker 41001
  1,572 taxa Open ↗
• Benton 41003
  1,855 taxa Open ↗
• Clackamas 41005
  1,485 taxa Open ↗
• Clatsop 41007
  979 taxa Open ↗
• Columbia 41009
  1,183 taxa Open ↗
• Coos 41011
  1,238 taxa Open ↗
• Crook 41013
  1,354 taxa Open ↗
• Curry 41015
  1,738 taxa Open ↗
• Deschutes 41017
  1,482 taxa Open ↗
• Douglas 41019
  2,250 taxa Open ↗

Showing 351–400 of 5,518.

• 
  Arabis nuttallii B.L. Rob. Native ARNU

  Nuttall's rockcress · Brassicaceae 6 counties
• 
  Arabis oregana Rollins Native AROR

  Oregon rockcress · Brassicaceae 3 counties
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  Arabis platysperma A. Gray Native ARPL

  pioneer rockcress · Brassicaceae 13 counties
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  Arabis platysperma A. Gray var. howellii (S. Watson) Jeps. Native ARPLH2

  Howell's pioneer rockcress · Brassicaceae 9 counties
• 
  Arabis platysperma A. Gray var. platysperma Native ARPLP2

  pioneer rockcress · Brassicaceae 2 counties
• 
  Arabis puberula Nutt. Native ARPU

  silver rockcress · Brassicaceae 10 counties
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  Arabis rectissima Greene Native ARRE

  bristlyleaf rockcress · Brassicaceae 2 counties
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  Arabis rectissima Greene var. rectissima Native ARRER2

  bristlyleaf rockcress · Brassicaceae 2 counties
• 
  Arabis sparsiflora Nutt. Native ARSP

  sicklepod rockcress · Brassicaceae 23 counties
• 
  Arabis sparsiflora Nutt. var. atrorubens (Suksd. ex Greene) Rollins Native ARSPA2

  elegant rockcress · Brassicaceae 3 counties
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  Arabis sparsiflora Nutt. var. sparsiflora Native ARSPS2

  sicklepod rockcress · Brassicaceae 8 counties
• 
  Arabis sparsiflora Nutt. var. subvillosa (S. Watson) Rollins Native ARSPS

  hairystem rockcress · Brassicaceae 16 counties
• 
  Arabis subpinnatifida S. Watson Native ARSU

  Klamath rockcress · Brassicaceae 4 counties
• 
  Arabis suffrutescens S. Watson Native ARSU2

  woody rockcress · Brassicaceae 12 counties
• 
  Arabis suffrutescens S. Watson var. horizontalis (Greene) Rollins Native ARSUH

  horizontal woody rockcress · Brassicaceae 2 counties
• 
  Arabis suffrutescens S. Watson var. suffrutescens Native ARSUS

  woody rockcress · Brassicaceae 6 counties
• 
  Arabis ×divaricarpa A. Nelson (pro sp.) [drummondii × holboellii] Native ARDI2

  spreadingpod rockcress · Brassicaceae 18 counties
• 
  Aralia californica S. Watson Native ARCA2

  California spikenard · Araliaceae 7 counties
• 
  Aralia elata (Miq.) Seem. Introduced AREL8

  Japanese angelica tree · Araliaceae 1 county
• 
  Arbutus menziesii Pursh Native ARME

  Pacific madrone · Ericaceae 15 counties
• 
  Arceuthobium abietinum (Engelm.) Hawksw. & Wiens Native ARAB4

  fir dwarf mistletoe · Viscaceae 9 counties
• 
  Arceuthobium abietinum (Engelm.) Hawksw. & Wiens ssp. wiensii Mathiasen & C.M. Daugherty Native ARABW

  Klamath fir dwarf mistletoe · Viscaceae 1 county
• 
  Arceuthobium abietinum Engelm. ex Munz ssp. abietinum Native ARABA

  fir dwarf mistletoe · Viscaceae 9 counties
• 
  Arceuthobium americanum Nutt. ex Engelm. Native ARAM

  American dwarf mistletoe · Viscaceae 15 counties
• 
  Arceuthobium campylopodum Engelm. Native ARCA3

  western dwarf mistletoe · Viscaceae 19 counties
• 
  Arceuthobium cyanocarpum (A. Nelson ex Rydb.) A. Nelson Native ARCY2

  limber pine dwarf mistletoe · Viscaceae 3 counties
• 
  Arceuthobium douglasii Engelm. Native ARDO

  Douglas-fir dwarf mistletoe · Viscaceae 15 counties
• 
  Arceuthobium laricis (Piper) H. St. John Native ARLA11

  larch dwarf mistletoe · Viscaceae 4 counties
• 
  Arceuthobium siskiyouense Hawksw., Wiens & Nickrent Native ARSI10

  knobcone pine dwarf mistletoe · Viscaceae 2 counties
• 
  Arceuthobium tsugense (Rosend.) G.N. Jones Native ARTS

  hemlock dwarf mistletoe · Viscaceae 8 counties
• 
  Arceuthobium tsugense (Rosend.) G.N. Jones ssp. mertensianae Hawksw. & Nickrent Native ARTSM2

  hemlock dwarf mistletoe · Viscaceae 1 county
• 
  Arceuthobium tsugense (Rosend.) G.N. Jones ssp. tsugense Native ARTST2

  hemlock dwarf mistletoe · Viscaceae 2 counties
• 
  Arctium lappa L. Introduced ARLA3

  greater burdock · Asteraceae 3 counties
• 
  Arctium minus Bernh. Introduced ARMI2

  lesser burdock · Asteraceae 22 counties
• 
  Arctostaphylos canescens Eastw. Native ARCA5

  hoary manzanita · Ericaceae 5 counties
• 
  Arctostaphylos canescens Eastw. ssp. canescens Native ARCAC7

  hoary manzanita · Ericaceae 5 counties
• 
  Arctostaphylos columbiana Piper Native ARCO3

  hairy manzanita · Ericaceae 14 counties
• 
  Arctostaphylos glandulosa Eastw. Native ARGL3

  Eastwood's manzanita · Ericaceae 5 counties
• 
  Arctostaphylos glandulosa Eastw. ssp. glandulosa Native ARGLG3

  Eastwood's manzanita · Ericaceae 5 counties
• 
  Arctostaphylos hispidula Howell Native ARHI5

  Gasquet manzanita · Ericaceae 3 counties
• 
  Arctostaphylos nevadensis A. Gray Native ARNE

  pinemat manzanita · Ericaceae 23 counties
• 
  Arctostaphylos patula Greene Native ARPA6

  greenleaf manzanita · Ericaceae 16 counties
• 
  Arctostaphylos uva-ursi (L.) Spreng. Native ARUV

  kinnikinnick · Ericaceae 19 counties
• 
  Arctostaphylos viscida Parry Native ARVI4

  sticky whiteleaf manzanita · Ericaceae 5 counties
• 
  Arctostaphylos viscida Parry ssp. pulchella (Howell) P.V. Wells Native ARVIP2

  sticky whiteleaf manzanita · Ericaceae 1 county
• ⚘
  Arctostaphylos ×cinerea Howell (pro sp.) [canescens × viscida] Native ARCI

  Waldo manzanita · Ericaceae 3 counties
• ⚘
  Arctostaphylos ×parvifolia Howell (pro sp.) [glandulosa × nevadensis] Native ARPA5

  small-leaf manzanita · Ericaceae 2 counties
• 
  Arenaria aculeata S. Watson Native ARAC2

  prickly sandwort · Caryophyllaceae 9 counties
• 
  Arenaria capillaris Poir. Native ARCA7

  slender mountain sandwort · Caryophyllaceae 22 counties
• 
  Arenaria capillaris Poir. ssp. americana Maguire Native ARCAA

  fescue sandwort · Caryophyllaceae 22 counties