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 2,451–2,500 of 5,518.

• 
  Helianthella quinquenervis (Hook.) A. Gray Native HEQU2

  fivenerve helianthella · Asteraceae 2 counties
• 
  Helianthella uniflora (Nutt.) Torr. & A. Gray Native HEUN

  oneflower helianthella · Asteraceae 18 counties
• 
  Helianthella uniflora (Nutt.) Torr. & A. Gray var. douglasii (Torr. & A. Gray) W.A. Weber Native HEUND

  Douglas' helianthella · Asteraceae 17 counties
• 
  Helianthella uniflora (Nutt.) Torr. & A. Gray var. uniflora Native HEUNU

  oneflower helianthella · Asteraceae 1 county
• 
  Helianthus annuus L. Native HEAN3

  common sunflower · Asteraceae 19 counties
• 
  Helianthus bolanderi A. Gray Native HEBO3

  serpentine sunflower · Asteraceae 3 counties
• 
  Helianthus cusickii A. Gray Native HECU2

  Cusick's sunflower · Asteraceae 11 counties
• 
  Helianthus nuttallii Torr. & A. Gray Native HENU

  Nuttall's sunflower · Asteraceae 4 counties
• 
  Helianthus nuttallii Torr. & A. Gray ssp. nuttallii Native HENUN

  Nuttall's sunflower · Asteraceae 4 counties
• 
  Helianthus petiolaris Nutt. Native HEPE

  prairie sunflower · Asteraceae 3 counties
• 
  Helianthus petiolaris Nutt. ssp. petiolaris Native HEPEP

  prairie sunflower · Asteraceae 3 counties
• 
  Helianthus tuberosus L. Native HETU

  Jerusalem artichoke · Asteraceae 1 county
• 
  Heliotropium curassavicum L. Native HECU3

  salt heliotrope · Boraginaceae 12 counties
• 
  Heliotropium curassavicum L. var. obovatum DC. Native HECUO2

  seaside heliotrope · Boraginaceae 12 counties
• 
  Hemerocallis fulva (L.) L. Introduced HEFU

  orange daylily · Liliaceae 1 county
• 
  Hemerocallis minor Mill. Introduced HEMI17

  small daylily · Liliaceae 1 county
• 
  Hemitomes congestum A. Gray Native HECO6

  coneplant · Monotropaceae 15 counties
• 
  Hemizonella minima (A. Gray) A. Gray Native HEMI20

  opposite-leaved tarweed · Asteraceae 21 counties
• 
  Hemizonia congesta DC. Native HECO7

  hayfield tarweed · Asteraceae 4 counties
• 
  Hemizonia congesta DC. ssp. clevelandii (Greene) Babc. & H.M. Hall Native HECOC6

  hayfield tarweed · Asteraceae 4 counties
• 
  Hemizonia fitchii A. Gray Native HEFI

  Fitch's tarweed · Asteraceae 2 counties
• 
  Heracleum mantegazzianum Sommier & Levier Introduced HEMA17

  giant hogweed · Apiaceae 5 counties
• 
  Heracleum maximum W. Bartram Native HEMA80

  common cowparsnip · Apiaceae 34 counties
• 
  Heracleum sphondylium L. Introduced HESP6

  eltrot · Apiaceae 1 county
• 
  Heracleum sphondylium L. ssp. sibiricum (L.) Simonkai Introduced HESPS

  eltrot · Apiaceae 1 county
• 
  Herniaria hirsuta L. Introduced HEHI7

  hairy rupturewort · Caryophyllaceae 1 county
• 
  Herniaria hirsuta L. ssp. hirsuta Introduced HEHIH

  hairy rupturewort · Caryophyllaceae 1 county
• 
  Hesperevax acaulis (Kellogg) Greene Native HEAC8

  stemless dwarf-cudweed · Asteraceae 3 counties
• 
  Hesperevax acaulis (Kellogg) Greene var. robustior Morefield Native HEACR

  stemless dwarf-cudweed · Asteraceae 3 counties
• 
  Hesperevax sparsiflora (A. Gray) Greene Native HESP9

  erect dwarf-cudweed · Asteraceae 4 counties
• 
  Hesperevax sparsiflora (A. Gray) Greene var. brevifolia (A. Gray) Morefield Native HESPB

  shortleaf dwarf-cudweed · Asteraceae 4 counties
• 
  Hesperis matronalis L. Introduced HEMA3

  dames rocket · Brassicaceae 9 counties
• 
  Hesperochiron californicus (Benth.) S. Watson Native HECA7

  California hesperochiron · Hydrophyllaceae 10 counties
• 
  Hesperochiron pumilus (Douglas ex Griseb.) Porter Native HEPU6

  dwarf hesperochiron · Hydrophyllaceae 18 counties
• 
  Hesperocyparis bakeri (Jeps.) Bartel Native HEBA5

  Modoc cypress · Cupressaceae 2 counties
• 
  Hesperocyparis macnabiana (A. Murray bis) Bartel Native HEMA21

  McNab's cypress · Cupressaceae 1 county
• 
  Hesperocyparis sargentii (Jeps.) Bartel Native HESA17

  Sargent's cypress · Cupressaceae 1 county
• 
  Hesperolinon micranthum (A. Gray) Small Native HEMI9

  smallflower dwarf-flax · Linaceae 12 counties
• 
  Hesperostipa comata (Trin. & Rupr.) Barkworth Native HECO26

  needle and thread · Poaceae 17 counties
• 
  Hesperostipa comata (Trin. & Rupr.) Barkworth ssp. comata Native HECOC8

  needle and thread · Poaceae 11 counties
• 
  Heteranthera dubia (Jacq.) MacMill. Native HEDU2

  grassleaf mudplantain · Pontederiaceae 3 counties
• 
  Heterocodon rariflorum Nutt. Native HERA3

  rareflower heterocodon · Campanulaceae 19 counties
• 
  Heterodraba unilateralis (M.E. Jones) Greene Native HEUN3

  ladiestongue mustard · Brassicaceae 1 county
• ⚘
  Heterotheca barbata (Rydb.) Semple Native HEBA2

  Spokane false goldenaster · Asteraceae 1 county
• 
  Heterotheca oregona (Nutt.) Shinners Native HEOR2

  Oregon false goldenaster · Asteraceae 12 counties
• 
  Heterotheca villosa (Pursh) Shinners Native HEVI4

  hairy false goldenaster · Asteraceae 17 counties
• 
  Heterotheca villosa (Pursh) Shinners var. foliosa (Nutt.) V.L. Harms Native HEVIF

  hairy false goldenaster · Asteraceae 7 counties
• 
  Heterotheca villosa (Pursh) Shinners var. minor (Hook.) Semple Native HEVIM3

  hairy false goldenaster · Asteraceae 11 counties
• 
  Heterotheca villosa (Pursh) Shinners var. villosa Native HEVIV

  hairy false goldenaster · Asteraceae 7 counties
• 
  Heuchera chlorantha Piper Native HECH

  tall alumroot · Saxifragaceae 17 counties