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 7,951–8,000 of 9,954.

• 
  Populus fremontii S. Watson ssp. fremontii Native POFRF3

  Fremont cottonwood · Salicaceae 50 counties
• 
  Populus nigra L. Introduced PONI

  Lombardy poplar · Salicaceae 5 counties
• 
  Populus tremuloides Michx. Native POTR5

  quaking aspen · Salicaceae 25 counties
• 
  Populus ×canadensis Moench (pro sp.) [deltoides × nigra] Native POCA19

  Carolina poplar · Salicaceae 1 county
• 
  Porophyllum gracile Benth. Native POGR5

  slender poreleaf · Asteraceae 6 counties
• 
  Porophyllum ruderale (Jacq.) Cass. Native PORU6

  yerba porosa · Asteraceae 1 county
• 
  Porophyllum ruderale (Jacq.) Cass. ssp. macrocephalum (DC.) R.R. Johnson Native PORUM2

  yerba porosa · Asteraceae 1 county
• 
  Porterella carnosula (Hook. & Arn.) Torr. Native POCA15

  fleshy porterella · Campanulaceae 16 counties
• 
  Portulaca halimoides L. Native POHA5

  silkcotton purslane · Portulacaceae 2 counties
• 
  Portulaca oleracea L. Both POOL

  little hogweed · Portulacaceae 39 counties
• 
  Potamogeton alpinus Balbis Native POAL8

  alpine pondweed · Potamogetonaceae 8 counties
• 
  Potamogeton amplifolius Tuck. Native POAM5

  largeleaf pondweed · Potamogetonaceae 8 counties
• 
  Potamogeton crispus L. Introduced POCR3

  curly pondweed · Potamogetonaceae 22 counties
• 
  Potamogeton diversifolius Raf. Native PODI

  waterthread pondweed · Potamogetonaceae 15 counties
• 
  Potamogeton epihydrus Raf. Native POEP2

  ribbonleaf pondweed · Potamogetonaceae 6 counties
• 
  Potamogeton foliosus Raf. Native POFO3

  leafy pondweed · Potamogetonaceae 39 counties
• 
  Potamogeton foliosus Raf. ssp. fibrillosus (Fernald) Haynes & C.B. Hellquist Native POFOF5

  leafy pondweed · Potamogetonaceae 1 county
• 
  Potamogeton foliosus Raf. ssp. foliosus Native POFOF4

  leafy pondweed · Potamogetonaceae 39 counties
• 
  Potamogeton gramineus L. Native POGR8

  variableleaf pondweed · Potamogetonaceae 17 counties
• 
  Potamogeton illinoensis Morong Native POIL

  Illinois pondweed · Potamogetonaceae 23 counties
• 
  Potamogeton natans L. Native PONA4

  floating pondweed · Potamogetonaceae 24 counties
• 
  Potamogeton nodosus Poir. Native PONO2

  longleaf pondweed · Potamogetonaceae 33 counties
• 
  Potamogeton praelongus Wulfen Native POPR5

  whitestem pondweed · Potamogetonaceae 4 counties
• 
  Potamogeton pusillus L. Native POPU7

  small pondweed · Potamogetonaceae 28 counties
• 
  Potamogeton pusillus L. ssp. pusillus Native POPUP5

  small pondweed · Potamogetonaceae 21 counties
• 
  Potamogeton pusillus L. ssp. tenuissimus (Mert. & W.D.J. Koch) Haynes & C.B. Hellquist Native POPUT3

  small pondweed · Potamogetonaceae 5 counties
• 
  Potamogeton richardsonii (Benn.) Rydb. Native PORI2

  Richardson's pondweed · Potamogetonaceae 10 counties
• 
  Potamogeton robbinsii Oakes Native PORO2

  Robbins' pondweed · Potamogetonaceae 9 counties
• 
  Potamogeton zosteriformis Fernald Native POZO

  flatstem pondweed · Potamogetonaceae 6 counties
• ⚘
  Potentilla acuminata H.M. Hall Native POAC7

  tapertip cinquefoil · Rosaceae 1 county
• 
  Potentilla anglica Laicharding Introduced POAN7

  English cinquefoil · Rosaceae 5 counties
• 
  Potentilla arguta Pursh Native POAR7

  tall cinquefoil · Rosaceae 1 county
• 
  Potentilla arguta Pursh ssp. convallaria (Rydb.) D.D. Keck Native POARC

  cream cinquefoil · Rosaceae 1 county
• 
  Potentilla basaltica Tiehm & Ertter Native POBA6

  Soldier Meadows cinquefoil · Rosaceae 1 county
• 
  Potentilla biennis Greene Native POBI7

  biennial cinquefoil · Rosaceae 14 counties
• 
  Potentilla concinna Richardson Native POCO13

  elegant cinquefoil · Rosaceae 1 county
• 
  Potentilla concinna Richardson var. concinna Native POCOC3

  elegant cinquefoil · Rosaceae 1 county
• 
  Potentilla cristae Ferlatte & Strother Native POCR6

  crested cinquefoil · Rosaceae 2 counties
• 
  Potentilla diversifolia Lehm. Native PODI2

  varileaf cinquefoil · Rosaceae 7 counties
• 
  Potentilla diversifolia Lehm. var. diversifolia Native PODID

  varileaf cinquefoil · Rosaceae 7 counties
• 
  Potentilla drummondii Lehm. Native PODR

  Drummond's cinquefoil · Rosaceae 25 counties
• 
  Potentilla drummondii Lehm. ssp. breweri (S. Watson) Ertter Native PODRB2

  Drummond's cinquefoil · Rosaceae 19 counties
• 
  Potentilla drummondii Lehm. ssp. bruceae (Rydb.) D.D. Keck Native PODRB

  Drummond's cinquefoil · Rosaceae 18 counties
• 
  Potentilla drummondii Lehm. ssp. drummondii Native PODRD

  Drummond's cinquefoil · Rosaceae 5 counties
• 
  Potentilla flabellifolia Hook. ex Torr. & A. Gray Native POFL3

  high mountain cinquefoil · Rosaceae 17 counties
• 
  Potentilla glandulosa Lindl. Native POGL9

  sticky cinquefoil · Rosaceae 50 counties
• 
  Potentilla glandulosa Lindl. ssp. ashlandica (Greene) D.D. Keck Native POGLA2

  Ashland cinquefoil · Rosaceae 15 counties
• 
  Potentilla glandulosa Lindl. ssp. ewanii D.D. Keck Native POGLE

  Ewan's cinquefoil · Rosaceae 2 counties
• 
  Potentilla glandulosa Lindl. ssp. glandulosa Native POGLG4

  sticky cinquefoil · Rosaceae 37 counties
• 
  Potentilla glandulosa Lindl. ssp. globosa D.D. Keck Native POGLG5

  sticky cinquefoil · Rosaceae 7 counties