Benton County

Showing 1–50 of 1,855.

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  Abies amabilis (Douglas ex Loudon) Douglas ex Forbes Native ABAM

  Pacific silver fir · Pinaceae
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  Abies grandis (Douglas ex D. Don) Lindl. Native ABGR

  grand fir · Pinaceae
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  Abies procera Rehder Native ABPR

  noble fir · Pinaceae
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  Abronia mellifera Douglas ex Hook. Native ABME

  white sand verbena · Nyctaginaceae
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  Abutilon theophrasti Medik. Introduced ABTH

  velvetleaf · Malvaceae
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  Acer circinatum Pursh Native ACCI

  vine maple · Aceraceae
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  Acer glabrum Torr. Native ACGL

  Rocky Mountain maple · Aceraceae
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  Acer glabrum Torr. var. douglasii (Hook.) Dippel Native ACGLD4

  Douglas maple · Aceraceae
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  Acer macrophyllum Pursh Native ACMA3

  bigleaf maple · Aceraceae
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  Acer negundo L. Native ACNE2

  boxelder · Aceraceae
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  Acer negundo L. var. negundo Native ACNEN

  boxelder · Aceraceae
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  Acer platanoides L. Introduced ACPL

  Norway maple · Aceraceae
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  Acer saccharinum L. Native ACSA2

  silver maple · Aceraceae
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  Achillea millefolium L. Both ACMI2

  common yarrow · Asteraceae
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  Achillea millefolium L. var. occidentalis DC. Native ACMIO

  western yarrow · Asteraceae
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  Achlys triphylla (Sm.) DC. Native ACTR

  sweet after death · Berberidaceae
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  Achnatherum hymenoides (Roem. & Schult.) Barkworth Native ACHY

  Indian ricegrass · Poaceae
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  Achnatherum lemmonii (Vasey) Barkworth Native ACLE8

  Lemmon's needlegrass · Poaceae
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  Achnatherum lemmonii (Vasey) Barkworth var. lemmonii Native ACLEL

  Lemmon's needlegrass · Poaceae
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  Achnatherum thurberianum (Piper) Barkworth Native ACTH7

  Thurber's needlegrass · Poaceae
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  Acroptilon repens (L.) DC. Introduced ACRE3

  hardheads · Asteraceae
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  Actaea elata (Nutt.) Prantl Native ACEL4

  tall bugbane · Ranunculaceae
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  Actaea rubra (Aiton) Willd. Native ACRU2

  red baneberry · Ranunculaceae
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  Actaea rubra (Aiton) Willd. ssp. arguta (Nutt.) Hultén Native ACRUA8

  red baneberry · Ranunculaceae
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  Adenocaulon bicolor Hook. Native ADBI

  American trailplant · Asteraceae
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  Adiantum aleuticum (Rupr.) Paris Native ADAL

  Aleutian maidenhair · Pteridaceae
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  Adonis aestivalis L. Introduced ADAE

  summer pheasant's eye · Ranunculaceae
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  Aegilops cylindrica Host Introduced AECY

  jointed goatgrass · Poaceae
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  Aegilops neglecta Req. ex Bertol. Introduced AENE2

  three-awned goatgrass · Poaceae
• 
  Aegopodium podagraria L. Introduced AEPO

  bishop's goutweed · Apiaceae
• 
  Aesculus hippocastanum L. Introduced AEHI

  horse chestnut · Hippocastanaceae
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  Agastache occidentalis (Piper) A. Heller Native AGOC

  western giant hyssop · Lamiaceae
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  Agoseris grandiflora (Nutt.) Greene Native AGGR

  bigflower agoseris · Asteraceae
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  Agoseris heterophylla (Nutt.) Greene Native AGHE2

  annual agoseris · Asteraceae
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  Agoseris heterophylla (Nutt.) Greene var. heterophylla Native AGHEH

  annual agoseris · Asteraceae
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  Agropyron cristatum (L.) Gaertn. Introduced AGCR

  crested wheatgrass · Poaceae
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  Agropyron cristatum (L.) Gaertn. ssp. pectinatum (M. Bieb.) Tzvelev Introduced AGCRP8

  crested wheatgrass · Poaceae
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  Agrostemma githago L. Introduced AGGI

  common corncockle · Caryophyllaceae
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  Agrostis capillaris L. Introduced AGCA5

  colonial bentgrass · Poaceae
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  Agrostis castellana Boiss. & Reuter Introduced AGCA11

  bentgrass · Poaceae
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  Agrostis exarata Trin. Native AGEX

  spike bentgrass · Poaceae
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  Agrostis gigantea Roth Introduced AGGI2

  redtop · Poaceae
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  Agrostis hallii Vasey Native AGHA2

  Hall's bentgrass · Poaceae
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  Agrostis microphylla Steud. Native AGMI3

  small-leaf bentgrass · Poaceae
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  Agrostis oregonensis Vasey Native AGOR

  Oregon bentgrass · Poaceae
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  Agrostis pallens Trin. Native AGPA8

  seashore bentgrass · Poaceae
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  Agrostis scabra Willd. Native AGSC5

  rough bentgrass · Poaceae
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  Agrostis stolonifera L. Introduced AGST2

  creeping bentgrass · Poaceae
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  Ailanthus altissima (Mill.) Swingle Introduced AIAL

  tree of heaven · Simaroubaceae
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  Aira caryophyllea L. Introduced AICA

  silver hairgrass · Poaceae