Linn County

Showing 101–150 of 1,680.

• 
  Antennaria umbrinella Rydb. Native ANUM

  umber pussytoes · Asteraceae
• 
  Anthemis arvensis L. Introduced ANAR6

  corn chamomile · Asteraceae
• 
  Anthemis cotula L. Introduced ANCO2

  stinking chamomile · Asteraceae
• 
  Anthoxanthum odoratum L. Introduced ANOD

  sweet vernalgrass · Poaceae
• 
  Anthoxanthum odoratum L. ssp. odoratum Introduced ANODO2

  sweet vernalgrass · Poaceae
• 
  Anthriscus caucalis M. Bieb. Introduced ANCA14

  bur chervil · Apiaceae
• 
  Aphanes arvensis L. Introduced APAR2

  field parsley piert · Rosaceae
• 
  Apocynum androsaemifolium L. Native APAN2

  spreading dogbane · Apocynaceae
• 
  Apocynum cannabinum L. Native APCA

  Indianhemp · Apocynaceae
• ⚘
  Apocynum ×floribundum Greene (pro sp.) [androsaemifolium × cannabinum] Native APFL

  Apocynaceae
• 
  Aquilegia formosa Fisch. ex DC. Native AQFO

  western columbine · Ranunculaceae
• 
  Arabidopsis thaliana (L.) Heynh. Introduced ARTH

  mouseear cress · Brassicaceae
• 
  Arabis glabra (L.) Bernh. Native ARGL

  tower rockcress · Brassicaceae
• ⚘
  Arabis hastatula Greene Native ARHA2

  eared rockcress · Brassicaceae
• 
  Arabis hirsuta (L.) Scop. Native ARHI

  hairy rockcress · Brassicaceae
• 
  Arabis hirsuta (L.) Scop. var. glabrata Torr. & A. Gray Native ARHIG

  mountain rockcress · Brassicaceae
• 
  Arabis holboellii Hornem. Native ARHO2

  Holboell's rockcress · Brassicaceae
• 
  Arabis holboellii Hornem. var. retrofracta (Graham) Rydb. Native ARHOR

  second rockcress · Brassicaceae
• 
  Arabis lemmonii S. Watson Native ARLE

  Lemmon's rockcress · Brassicaceae
• 
  Arabis lemmonii S. Watson var. lemmonii Native ARLEL

  Lemmon's rockcress · Brassicaceae
• 
  Arabis lyallii S. Watson Native ARLY

  Lyall's rockcress · Brassicaceae
• 
  Arabis platysperma A. Gray Native ARPL

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

  Howell's pioneer rockcress · Brassicaceae
• 
  Arabis suffrutescens S. Watson Native ARSU2

  woody rockcress · Brassicaceae
• 
  Aralia californica S. Watson Native ARCA2

  California spikenard · Araliaceae
• 
  Arbutus menziesii Pursh Native ARME

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

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

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

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

  western dwarf mistletoe · Viscaceae
• 
  Arceuthobium tsugense (Rosend.) G.N. Jones Native ARTS

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

  hemlock dwarf mistletoe · Viscaceae
• 
  Arctium minus Bernh. Introduced ARMI2

  lesser burdock · Asteraceae
• 
  Arctostaphylos columbiana Piper Native ARCO3

  hairy manzanita · Ericaceae
• 
  Arctostaphylos nevadensis A. Gray Native ARNE

  pinemat manzanita · Ericaceae
• 
  Arctostaphylos patula Greene Native ARPA6

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

  kinnikinnick · Ericaceae
• 
  Arenaria capillaris Poir. Native ARCA7

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

  fescue sandwort · Caryophyllaceae
• 
  Arenaria pumicola Coville & Leiberg Native ARPU6

  Crater Lake sandwort · Caryophyllaceae
• 
  Arenaria serpyllifolia L. Introduced ARSE2

  thymeleaf sandwort · Caryophyllaceae
• 
  Aristida oligantha Michx. Native AROL

  prairie threeawn · Poaceae
• ⚘
  Arnica amplexicaulis Nutt. Native ARAM2

  clasping arnica · Asteraceae
• 
  Arnica cordifolia Hook. Native ARCO9

  heartleaf arnica · Asteraceae
• 
  Arnica discoidea Benth. Native ARDI6

  rayless arnica · Asteraceae
• 
  Arnica gracilis Rydb. Native ARGR14

  smallhead arnica · Asteraceae
• 
  Arnica latifolia Bong. Native ARLA8

  broadleaf arnica · Asteraceae
• 
  Arnica mollis Hook. Native ARMO4

  hairy arnica · Asteraceae
• 
  Arrhenatherum elatius (L.) P. Beauv. ex J. Presl & C. Presl Introduced AREL3

  tall oatgrass · Poaceae
• 
  Artemisia douglasiana Besser Native ARDO3

  Douglas' sagewort · Asteraceae