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 1,001–1,050 of 4,583 (native).

• 
  Caulanthus major (M.E. Jones) Payson var. nevadensis Rollins Native CAMAN

  slender wild cabbage · Brassicaceae 2 counties
• 
  Caulanthus pilosus S. Watson Native CAPI4

  hairy wild cabbage · Brassicaceae 6 counties
• 
  Ceanothus cordulatus Kellogg Native CECO

  whitethorn ceanothus · Rhamnaceae 6 counties
• 
  Ceanothus cuneatus (Hook.) Nutt. Native CECU

  buckbrush · Rhamnaceae 10 counties
• 
  Ceanothus cuneatus (Hook.) Nutt. var. cuneatus Native CECUC3

  buckbrush · Rhamnaceae 10 counties
• 
  Ceanothus integerrimus Hook. & Arn. Native CEIN3

  deerbrush · Rhamnaceae 10 counties
• 
  Ceanothus palmeri Trel. Native CEPA

  Palmer ceanothus · Rhamnaceae 1 county
• 
  Ceanothus prostratus Benth. Native CEPR

  prostrate ceanothus · Rhamnaceae 13 counties
• 
  Ceanothus pumilus Greene Native CEPU

  dwarf ceanothus · Rhamnaceae 4 counties
• 
  Ceanothus sanguineus Pursh Native CESA

  redstem ceanothus · Rhamnaceae 22 counties
• 
  Ceanothus thyrsiflorus Eschsch. Native CETH

  blueblossom · Rhamnaceae 8 counties
• 
  Ceanothus velutinus Douglas ex Hook. Native CEVE

  snowbrush ceanothus · Rhamnaceae 28 counties
• 
  Ceanothus velutinus Douglas ex Hook. var. hookeri M.C. Johnst. Native CEVEH2

  Hooker's ceanothus · Rhamnaceae 12 counties
• 
  Ceanothus velutinus Douglas ex Hook. var. velutinus Native CEVEV4

  snowbrush ceanothus · Rhamnaceae 24 counties
• 
  Celtis laevigata Willd. Native CELA

  sugarberry · Ulmaceae 12 counties
• 
  Celtis laevigata Willd. var. reticulata (Torr.) L.D. Benson Native CELAR

  netleaf hackberry · Ulmaceae 12 counties
• 
  Cenchrus longispinus (Hack.) Fernald Native CELO3

  mat sandbur · Poaceae 7 counties
• 
  Centaurium exaltatum (Griseb.) W. Wight ex Piper Native CEEX

  desert centaury · Gentianaceae 17 counties
• 
  Centaurium muehlenbergii (Griseb.) W. Wight ex Piper Native CEMU2

  Muhlenberg's centaury · Gentianaceae 14 counties
• 
  Centromadia pungens (Hook. & Arn.) Greene Native CEPU14

  common tarweed · Asteraceae 12 counties
• 
  Centromadia pungens (Hook. & Arn.) Greene ssp. pungens Native CEPUP6

  common tarweed · Asteraceae 8 counties
• 
  Centromadia pungens (Hook. & Arn.) Greene ssp. septentrionalis (D.D. Keck) B.G. Baldw. Native CEPUS2

  common tarweed · Asteraceae 6 counties
• 
  Cephalanthera austiniae (A. Gray) A. Heller Native CEAU

  phantom orchid · Orchidaceae 17 counties
• 
  Cerastium arvense L. ssp. strictum (L.) Ugborogho Native CEARS2

  field chickweed · Caryophyllaceae 1 county
• 
  Cerastium beeringianum Cham. & Schltdl. Native CEBE2

  Bering chickweed · Caryophyllaceae 2 counties
• 
  Cerastium beeringianum Cham. & Schltdl. ssp. earlei (Rydb.) Hultén Native CEBEE

  Bering chickweed · Caryophyllaceae 2 counties
• 
  Cerastium nutans Raf. Native CENU2

  nodding chickweed · Caryophyllaceae 14 counties
• 
  Cerastium nutans Raf. var. nutans Native CENUN

  nodding chickweed · Caryophyllaceae 14 counties
• 
  Ceratophyllum demersum L. Native CEDE4

  coon's tail · Ceratophyllaceae 17 counties
• 
  Ceratophyllum echinatum A. Gray Native CEEC2

  spineless hornwort · Ceratophyllaceae 1 county
• 
  Cercocarpus ledifolius Nutt. Native CELE3

  curl-leaf mountain mahogany · Rosaceae 15 counties
• 
  Cercocarpus ledifolius Nutt. var. intercedens C.K. Schneid. Native CELEI

  curl-leaf mountain mahogany · Rosaceae 14 counties
• 
  Cercocarpus ledifolius Nutt. var. ledifolius Native CELEL

  curl-leaf mountain mahogany · Rosaceae 2 counties
• 
  Cercocarpus montanus Raf. Native CEMO2

  alderleaf mountain mahogany · Rosaceae 7 counties
• 
  Cercocarpus montanus Raf. var. glaber (S. Watson) F.L. Martin Native CEMOG

  birchleaf mountain mahogany · Rosaceae 6 counties
• 
  Cercocarpus montanus Raf. var. macrourus (Rydb.) F.L. Martin Native CEMOM2

  Klamath mountain mahogany · Rosaceae 5 counties
• 
  Chaenactis cusickii A. Gray Native CHCU

  Cusick's pincushion · Asteraceae 2 counties
• 
  Chaenactis douglasii (Hook.) Hook. & Arn. Native CHDO

  Douglas' dustymaiden · Asteraceae 24 counties
• 
  Chaenactis douglasii (Hook.) Hook. & Arn. var. alpina A. Gray Native CHDOA2

  alpine dustymaiden · Asteraceae 4 counties
• 
  Chaenactis douglasii (Hook.) Hook. & Arn. var. douglasii Native CHDOD

  Douglas' dustymaiden · Asteraceae 22 counties
• 
  Chaenactis macrantha D.C. Eaton Native CHMA

  bighead dustymaiden · Asteraceae 3 counties
• 
  Chaenactis nevii A. Gray Native CHNE6

  John Day's pincushion · Asteraceae 5 counties
• 
  Chaenactis stevioides Hook. & Arn. Native CHST

  Esteve's pincushion · Asteraceae 3 counties
• 
  Chaenactis xantiana A. Gray Native CHXA

  fleshcolor pincushion · Asteraceae 3 counties
• 
  Chaetadelpha wheeleri A. Gray ex S. Watson Native CHWH

  Wheeler's skeletonweed · Asteraceae 2 counties
• 
  Chamaebatiaria millefolium (Torr.) Maxim. Native CHMI2

  desert sweet · Rosaceae 3 counties
• 
  Chamaecyparis lawsoniana (A. Murray bis) Parl. Native CHLA

  Port Orford cedar · Cupressaceae 12 counties
• 
  Chamaesyce glyptosperma (Engelm.) Small Native CHGL13

  ribseed sandmat · Euphorbiaceae 16 counties
• 
  Chamaesyce maculata (L.) Small Native CHMA15

  spotted sandmat · Euphorbiaceae 9 counties
• 
  Chamaesyce serpyllifolia (Pers.) Small Native CHSE6

  thymeleaf sandmat · Euphorbiaceae 24 counties