California

• Alameda 06001
  1,856 taxa Open ↗
• Alpine 06003
  1,174 taxa Open ↗
• Amador 06005
  1,226 taxa Open ↗
• Butte 06007
  2,704 taxa Open ↗
• Calaveras 06009
  1,227 taxa Open ↗
• Colusa 06011
  1,330 taxa Open ↗
• Contra Costa 06013
  1,712 taxa Open ↗
• Del Norte 06015
  1,424 taxa Open ↗
• El Dorado 06017
  1,950 taxa Open ↗
• Fresno 06019
  2,373 taxa Open ↗

Showing 6,051–6,100 of 8,499 (native).

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  Osmorhiza depauperata Phil. Native OSDE

  bluntseed sweetroot · Apiaceae 1 county
• 
  Osmorhiza occidentalis (Nutt. ex Torr. & A. Gray) Torr. Native OSOC

  western sweetroot · Apiaceae 21 counties
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  Osmorhiza purpurea (J.M. Coult. & Rose) Suksd. Native OSPU

  purple sweetroot · Apiaceae 2 counties
• 
  Oxalis albicans Kunth Native OXAL

  radishroot woodsorrel · Oxalidaceae 18 counties
• 
  Oxalis albicans Kunth ssp. californica (Abrams) Eiten Native OXALC

  California woodsorrel · Oxalidaceae 6 counties
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  Oxalis albicans Kunth ssp. pilosa (Nutt.) Eiten Native OXALP

  radishroot woodsorrel · Oxalidaceae 15 counties
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  Oxalis corniculata L. Native OXCO

  creeping woodsorrel · Oxalidaceae 30 counties
• 
  Oxalis latifolia Kunth Native OXLA6

  broadleaf woodsorrel · Oxalidaceae 3 counties
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  Oxalis oregana Nutt. Native OXOR

  redwood-sorrel · Oxalidaceae 12 counties
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  Oxalis suksdorfii Trel. Native OXSU

  Suksdorf woodsorrel · Oxalidaceae 2 counties
• 
  Oxalis trilliifolia Hook. Native OXTR

  threeleaf woodsorrel · Oxalidaceae 2 counties
• 
  Oxypolis occidentalis J.M. Coult. & Rose Native OXOC

  western cowbane · Apiaceae 14 counties
• 
  Oxyria digyna (L.) Hill Native OXDI3

  alpine mountainsorrel · Polygonaceae 22 counties
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  Oxystylis lutea Torr. & Frém. Native OXLU

  spiny caper · Capparaceae 2 counties
• 
  Oxytenia acerosa Nutt. Native OXAC4

  copperweed · Asteraceae 1 county
• 
  Oxytheca caryophylloides Parry Native OXCA3

  chickweed oxytheca · Polygonaceae 5 counties
• 
  Oxytheca dendroidea Nutt. Native OXDE

  narrowleaf oxytheca · Polygonaceae 5 counties
• 
  Oxytheca emarginata H.M. Hall Native OXEM

  whitemargin oxytheca · Polygonaceae 1 county
• 
  Oxytheca parishii Parry Native OXPA

  Parish's oxytheca · Polygonaceae 4 counties
• 
  Oxytheca parishii Parry var. abramsii (McGregor) Munz Native OXPAA

  Abrams' oxytheca · Polygonaceae 2 counties
• 
  Oxytheca parishii Parry var. cienegensis Ertter Native OXPAC

  Cienega Seca oxytheca · Polygonaceae 1 county
• 
  Oxytheca parishii Parry var. goodmaniana Ertter Native OXPAG

  Cushenbury oxytheca · Polygonaceae 1 county
• 
  Oxytheca parishii Parry var. parishii Native OXPAP

  Parish's oxytheca · Polygonaceae 3 counties
• 
  Oxytheca perfoliata Torr. & A. Gray Native OXPE2

  roundleaf oxytheca · Polygonaceae 11 counties
• 
  Oxytheca trilobata A. Gray Native OXTR2

  threelobe oxytheca · Polygonaceae 6 counties
• 
  Oxytheca watsonii Torr. & A. Gray Native OXWA

  Watson's oxytheca · Polygonaceae 1 county
• 
  Oxytropis borealis DC. Native OXBO

  boreal locoweed · Fabaceae 2 counties
• 
  Oxytropis borealis DC. var. australis S.L. Welsh Native OXBOA

  boreal locoweed · Fabaceae 2 counties
• 
  Oxytropis borealis DC. var. viscida (Nutt.) S.L. Welsh Native OXBOV

  viscid locoweed · Fabaceae 2 counties
• 
  Oxytropis deflexa (Pall.) DC. Native OXDE2

  nodding locoweed · Fabaceae 1 county
• 
  Oxytropis deflexa (Pall.) DC. var. sericea Torr. & A. Gray Native OXDES

  blue nodding locoweed · Fabaceae 1 county
• 
  Oxytropis oreophila A. Gray Native OXOR2

  mountain oxytrope · Fabaceae 1 county
• 
  Oxytropis oreophila A. Gray var. oreophila Native OXORO

  mountain oxytrope · Fabaceae 1 county
• 
  Oxytropis parryi A. Gray Native OXPA2

  Parry's oxytrope · Fabaceae 2 counties
• 
  Packera bernardina (Greene) W.A. Weber & Á. Löve Native PABE7

  San Bernardino ragwort · Asteraceae 1 county
• 
  Packera bolanderi (A. Gray) W.A. Weber & Á. Löve Native PABO6

  Bolander's ragwort · Asteraceae 3 counties
• 
  Packera bolanderi (A. Gray) W.A. Weber & Á. Löve var. bolanderi Native PABOB

  Bolander's ragwort · Asteraceae 3 counties
• 
  Packera breweri (Burtt Davy) W.A. Weber & Á. Löve Native PABR11

  Brewer's ragwort · Asteraceae 15 counties
• 
  Packera cana (Hook.) W.A. Weber & Á. Löve Native PACA15

  woolly groundsel · Asteraceae 19 counties
• 
  Packera clevelandii (Greene) W.A. Weber & Á. Löve Native PACL10

  Cleveland's ragwort · Asteraceae 6 counties
• 
  Packera eurycephala (Torr. & A. Gray) W.A. Weber & Á. Löve Native PAEU5

  widehead groundsel · Asteraceae 14 counties
• 
  Packera eurycephala (Torr. & A. Gray) W.A. Weber & Á. Löve var. eurycephala Native PAEUE

  widehead groundsel · Asteraceae 13 counties
• 
  Packera eurycephala (Torr. & A. Gray) W.A. Weber & Á. Löve var. lewisrosei (J.T. Howell) J.F. Bain Native PAEUL

  Lewis' groundsel · Asteraceae 2 counties
• 
  Packera ganderi (T.M. Barkley & R.M. Beauch.) W.A. Weber & Á. Löve Native PAGA5

  Gander's ragwort · Asteraceae 2 counties
• 
  Packera greenei (A. Gray) W.A. Weber & Á. Löve Native PAGR9

  flame ragwort · Asteraceae 8 counties
• 
  Packera indecora (Greene) Á. Löve & D. Löve Native PAIN11

  elegant groundsel · Asteraceae 2 counties
• 
  Packera ionophylla (Greene) W.A. Weber & Á. Löve Native PAIO4

  Tehachapi ragwort · Asteraceae 3 counties
• 
  Packera layneae (Greene) W.A. Weber & Á. Löve Native PALA41

  Layne's ragwort · Asteraceae 4 counties
• 
  Packera macounii (Greene) W.A. Weber & Á. Löve Native PAMA35

  Siskiyou Mountain ragwort · Asteraceae 3 counties
• 
  Packera multilobata (Torr. & A. Gray ex A. Gray) W.A. Weber & Á. Löve Native PAMU11

  lobeleaf groundsel · Asteraceae 4 counties