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 1,201–1,250 of 4,583 (native).

• 
  Collomia mazama Coville Native COMA

  Mt. Mazama collomia · Polemoniaceae 3 counties
• ⚘
  Collomia renacta E. Joyal Native CORE10

  Barren Valley collomia · Polemoniaceae 2 counties
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  Collomia tenella A. Gray Native COTE

  diffuse collomia · Polemoniaceae 6 counties
• 
  Collomia tinctoria Kellogg Native COTI2

  staining collomia · Polemoniaceae 14 counties
• 
  Columbiadoria hallii (A. Gray) G.L. Nesom Native COHA5

  Hall's columbiadoria · Asteraceae 10 counties
• 
  Comandra umbellata (L.) Nutt. Native COUM

  bastard toadflax · Santalaceae 25 counties
• 
  Comandra umbellata (L.) Nutt. ssp. californica (Eastw. ex Rydb.) Piehl Native COUMC

  California bastard toadflax · Santalaceae 15 counties
• 
  Comandra umbellata (L.) Nutt. ssp. pallida (A. DC.) Piehl Native COUMP

  pale bastard toadflax · Santalaceae 15 counties
• 
  Comarum palustre L. Native COPA28

  purple marshlocks · Rosaceae 18 counties
• 
  Conioselinum gmelinii (Cham. & Schltdl.) Steud. Native COGM

  Pacific hemlockparsley · Apiaceae 8 counties
• 
  Conyza canadensis (L.) Cronquist Native COCA5

  Canadian horseweed · Asteraceae 28 counties
• 
  Conyza canadensis (L.) Cronquist var. canadensis Native COCAC3

  Canadian horseweed · Asteraceae 28 counties
• 
  Coptis laciniata A. Gray Native COLA3

  Oregon goldthread · Ranunculaceae 14 counties
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  Coptis occidentalis (Nutt.) Torr. & A. Gray Native COOC

  Idaho goldthread · Ranunculaceae 1 county
• 
  Coptis trifolia (L.) Salisb. Native COTR2

  threeleaf goldthread · Ranunculaceae 2 counties
• 
  Corallorhiza maculata (Raf.) Raf. Native COMA25

  summer coralroot · Orchidaceae 29 counties
• 
  Corallorhiza mertensiana Bong. Native COME17

  Pacific coralroot · Orchidaceae 21 counties
• 
  Corallorhiza striata Lindl. Native COST19

  hooded coralroot · Orchidaceae 24 counties
• 
  Corallorhiza striata Lindl. var. striata Native COSTS3

  hooded coralroot · Orchidaceae 14 counties
• 
  Corallorhiza striata Lindl. var. vreelandii (Rydb.) L.O. Williams Native COSTV2

  Vreeland's coralroot · Orchidaceae 3 counties
• 
  Corallorhiza trifida Chatelain Native COTR18

  yellow coralroot · Orchidaceae 10 counties
• 
  Corallorhiza wisteriana Conrad Native COWI5

  spring coralroot · Orchidaceae 1 county
• 
  Cordylanthus capitatus Nutt. ex Benth. Native COCA7

  Yakima bird's-beak · Scrophulariaceae 6 counties
• 
  Cordylanthus maritimus Nutt. ex Benth. Native COMA5

  saltmarsh bird's-beak · Scrophulariaceae 5 counties
• 
  Cordylanthus maritimus Nutt. ex Benth. ssp. canescens (A. Gray) T.I. Chuang & Heckard Native COMAC

  saltmarsh bird's-beak · Scrophulariaceae 2 counties
• 
  Cordylanthus maritimus Nutt. ex Benth. ssp. palustris (Behr) T.I. Chuang & Heckard Native COMAP

  Pt. Reyes bird's-beak · Scrophulariaceae 3 counties
• 
  Cordylanthus ramosus Nutt. ex Benth. Native CORA5

  bushy bird's beak · Scrophulariaceae 11 counties
• 
  Cordylanthus tenuis A. Gray Native COTE3

  slender bird's beak · Scrophulariaceae 6 counties
• 
  Cordylanthus tenuis A. Gray ssp. viscidus (Howell) T.I. Chuang & Heckard Native COTEV

  slender bird's beak · Scrophulariaceae 6 counties
• 
  Coreopsis lanceolata L. Native COLA5

  lanceleaf tickseed · Asteraceae 2 counties
• 
  Coreopsis tinctoria Nutt. Native COTI3

  golden tickseed · Asteraceae 9 counties
• 
  Coreopsis tinctoria Nutt. var. atkinsoniana (Douglas ex Lindl.) H.M. Parker ex E.B. Sm. Native COTIA

  Atkinson's tickseed · Asteraceae 8 counties
• 
  Coreopsis tinctoria Nutt. var. tinctoria Native COTIT

  golden tickseed · Asteraceae 1 county
• 
  Corethrogyne filaginifolia (Hook. & Arn.) Nutt. Native COFI2

  common sandaster · Asteraceae 3 counties
• 
  Corethrogyne filaginifolia (Hook. & Arn.) Nutt. var. californica (DC.) J.P. Saroyan Native COFIC

  California sandaster · Asteraceae 3 counties
• 
  Corispermum pacificum Mosyakin Native COPA37

  common bugseed · Chenopodiaceae 3 counties
• 
  Corispermum villosum Rydb. Native COVI5

  hairy bugseed · Chenopodiaceae 1 county
• 
  Cornus glabrata Benth. Native COGL3

  brown dogwood · Cornaceae 3 counties
• 
  Cornus nuttallii Audubon ex Torr. & A. Gray Native CONU4

  Pacific dogwood · Cornaceae 20 counties
• 
  Cornus sericea L. Native COSE16

  redosier dogwood · Cornaceae 35 counties
• 
  Cornus sericea L. ssp. occidentalis (Torr. & A. Gray) Fosberg Native COSEO

  western dogwood · Cornaceae 19 counties
• 
  Cornus sericea L. ssp. sericea Native COSES

  redosier dogwood · Cornaceae 35 counties
• 
  Cornus unalaschkensis Ledeb. Native COUN

  western cordilleran bunchberry · Cornaceae 25 counties
• 
  Corydalis aurea Willd. Native COAU2

  scrambled eggs · Fumariaceae 8 counties
• 
  Corydalis caseana A. Gray Native COCA15

  Sierra fumewort · Fumariaceae 8 counties
• 
  Corydalis caseana A. Gray ssp. aquae-gelidae (M. Peck & Wilson) Zetterlund & Lidén Native COCAA

  coldwater fumewort · Fumariaceae 5 counties
• 
  Corydalis caseana A. Gray ssp. cusickii (S. Watson) G.B. Ownbey Native COCAC

  Cusick's fumewort · Fumariaceae 3 counties
• 
  Corydalis scouleri Hook. Native COSC4

  Scouler's fumewort · Fumariaceae 12 counties
• 
  Corylus cornuta Marshall Native COCO6

  beaked hazelnut · Betulaceae 21 counties
• 
  Corylus cornuta Marshall var. californica (A. DC.) Sharp Native COCOC

  California hazelnut · Betulaceae 21 counties