Yamhill County

Showing 51–100 of 871.

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  Anthemis arvensis L. Introduced ANAR6

  corn chamomile · Asteraceae
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  Anthemis cotula L. Introduced ANCO2

  stinking chamomile · Asteraceae
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  Anthriscus caucalis M. Bieb. Introduced ANCA14

  bur chervil · Apiaceae
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  Apocynum androsaemifolium L. Native APAN2

  spreading dogbane · Apocynaceae
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  Aquilegia formosa Fisch. ex DC. Native AQFO

  western columbine · Ranunculaceae
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  Arbutus menziesii Pursh Native ARME

  Pacific madrone · Ericaceae
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  Arctium minus Bernh. Introduced ARMI2

  lesser burdock · Asteraceae
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  Arrhenatherum elatius (L.) P. Beauv. ex J. Presl & C. Presl Introduced AREL3

  tall oatgrass · Poaceae
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  Artemisia douglasiana Besser Native ARDO3

  Douglas' sagewort · Asteraceae
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  Aruncus dioicus (Walter) Fernald Both ARDI8

  bride's feathers · Rosaceae
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  Aruncus dioicus (Walter) Fernald var. acuminatus (Rydb.) Rydb. ex H. Hara Native ARDIA

  bride's feathers · Rosaceae
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  Asarum caudatum Lindl. Native ASCA2

  British Columbia wildginger · Aristolochiaceae
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  Asclepias speciosa Torr. Native ASSP

  showy milkweed · Asclepiadaceae
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  Athyrium filix-femina (L.) Roth Native ATFI

  common ladyfern · Dryopteridaceae
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  Athyrium filix-femina (L.) Roth ssp. cyclosorum (Rupr.) C. Chr. Native ATFIC

  subarctic ladyfern · Dryopteridaceae
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  Athysanus pusillus (Hook.) Greene Native ATPU

  common sandweed · Brassicaceae
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  Atriplex hortensis L. Introduced ATHO

  garden orache · Chenopodiaceae
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  Avena barbata Pott ex Link Introduced AVBA

  slender oat · Poaceae
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  Avena fatua L. Introduced AVFA

  wild oat · Poaceae
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  Avena sativa L. Introduced AVSA

  common oat · Poaceae
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  Balsamorhiza deltoidea Nutt. Native BADE2

  deltoid balsamroot · Asteraceae
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  Barbarea orthoceras Ledeb. Native BAOR

  American yellowrocket · Brassicaceae
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  Barbarea verna (Mill.) Asch. Introduced BAVE

  early yellowrocket · Brassicaceae
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  Barbarea vulgaris W.T. Aiton Introduced BAVU

  garden yellowrocket · Brassicaceae
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  Beckmannia syzigachne (Steud.) Fernald Native BESY

  American sloughgrass · Poaceae
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  Bellis perennis L. Introduced BEPE2

  lawndaisy · Asteraceae
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  Bidens cernua L. Native BICE

  nodding beggartick · Asteraceae
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  Bidens frondosa L. Native BIFR

  devil's beggartick · Asteraceae
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  Blechnum spicant (L.) Sm. Native BLSP

  deer fern · Blechnaceae
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  Borago officinalis L. Introduced BOOF

  common borage · Boraginaceae
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  Botrychium multifidum (S.G. Gmel.) Trevis. Native BOMU

  leathery grapefern · Ophioglossaceae
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  Boykinia occidentalis Torr. & A. Gray Native BOOC2

  coastal brookfoam · Saxifragaceae
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  Brassica oleracea L. Introduced BROL

  cabbage · Brassicaceae
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  Brassica rapa L. Introduced BRRA

  field mustard · Brassicaceae
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  Brassica rapa L. var. rapa Introduced BRRAR

  field mustard · Brassicaceae
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  Brodiaea elegans Hoover Native BREL

  harvest brodiaea · Liliaceae
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  Bromus carinatus Hook. & Arn. Native BRCA5

  California brome · Poaceae
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  Bromus diandrus Roth Introduced BRDI3

  ripgut brome · Poaceae
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  Bromus diandrus Roth ssp. rigidus (Roth) Lainz Introduced BRDIR

  ripgut brome · Poaceae
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  Bromus hordeaceus L. Introduced BRHO2

  soft brome · Poaceae
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  Bromus hordeaceus L. ssp. hordeaceus Introduced BRHOH

  soft brome · Poaceae
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  Bromus racemosus L. Introduced BRRA2

  bald brome · Poaceae
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  Bromus sitchensis Trin. Native BRSI

  Alaska brome · Poaceae
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  Bromus sterilis L. Introduced BRST2

  poverty brome · Poaceae
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  Bromus vulgaris (Hook.) Shear Native BRVU

  Columbia brome · Poaceae
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  Calamagrostis stricta (Timm) Koeler Native CAST36

  slimstem reedgrass · Poaceae
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  Calamagrostis stricta (Timm) Koeler ssp. stricta Native CASTS5

  slimstem reedgrass · Poaceae
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  Calamagrostis stricta (Timm) Koeler ssp. stricta var. stricta Native CASTS8

  slimstem reedgrass · Poaceae
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  Calandrinia ciliata (Ruiz & Pav.) DC. Native CACI2

  fringed redmaids · Portulacaceae
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  Callitriche heterophylla Pursh Native CAHE3

  twoheaded water-starwort · Callitrichaceae