Louisiana

• Acadia 22001
  964 taxa Open ↗
• Allen 22003
  1,426 taxa Open ↗
• Ascension 22005
  551 taxa Open ↗
• Assumption 22007
  456 taxa Open ↗
• Avoyelles 22009
  803 taxa Open ↗
• Beauregard 22011
  1,018 taxa Open ↗
• Bienville 22013
  1,400 taxa Open ↗
• Bossier 22015
  1,395 taxa Open ↗
• Caddo 22017
  1,796 taxa Open ↗
• Calcasieu 22019
  1,531 taxa Open ↗

Showing 1,301–1,350 of 2,926 (native).

• 
  Iris giganticaerulea Small Native IRGI

  giant blue iris · Iridaceae 13 counties
• 
  Iris hexagona Walter Native IRHE2

  Dixie iris · Iridaceae 16 counties
• 
  Iris hexagona Walter var. flexicaulis (Small) R.C. Foster Native IRHEF

  Dixie iris · Iridaceae 1 county
• 
  Iris virginica L. Native IRVI

  Virginia iris · Iridaceae 35 counties
• 
  Isoetes louisianensis Thieret Native ISLO

  Louisiana quillwort · Isoetaceae 2 counties
• 
  Isoetes melanopoda Gay & Durieu ex Durieu Native ISME

  blackfoot quillwort · Isoetaceae 26 counties
• 
  Isolepis carinata Hook. & Arn. ex Torr. Native ISCA6

  keeled bulrush · Cyperaceae 47 counties
• ⚘
  Isolepis molesta (M.C. Johnst.) S.G. Sm. Native ISMO2

  Gulf Coast bulrush · Cyperaceae 13 counties
• 
  Isotria verticillata Raf. Native ISVE

  large whorled pogonia · Orchidaceae 14 counties
• 
  Itea virginica L. Native ITVI

  Virginia sweetspire · Grossulariaceae 52 counties
• 
  Iva angustifolia Nutt. ex DC. Native IVAN

  narrowleaf marsh elder · Asteraceae 16 counties
• 
  Iva annua L. Native IVAN2

  annual marsh elder · Asteraceae 60 counties
• 
  Iva annua L. var. annua Native IVANA

  annual marsh elder · Asteraceae 1 county
• 
  Iva annua L. var. caudata (Small) R.C. Jacks. Native IVANC

  annual marsh elder · Asteraceae 1 county
• 
  Iva frutescens L. Native IVFR

  Jesuit's bark · Asteraceae 13 counties
• 
  Iva frutescens L. ssp. frutescens Native IVFRF

  Jesuit's bark · Asteraceae 13 counties
• 
  Iva imbricata Walter Native IVIM

  seacoast marsh elder · Asteraceae 6 counties
• 
  Jacquemontia tamnifolia (L.) Griseb. Native JATA

  hairy clustervine · Convolvulaceae 55 counties
• 
  Juglans nigra L. Native JUNI

  black walnut · Juglandaceae 38 counties
• 
  Juncus acuminatus Michx. Native JUAC

  tapertip rush · Juncaceae 57 counties
• 
  Juncus brachycarpus Engelm. Native JUBR

  whiteroot rush · Juncaceae 37 counties
• 
  Juncus bufonius L. Native JUBU

  toad rush · Juncaceae 44 counties
• 
  Juncus bufonius L. var. bufonius Native JUBUB

  toad rush · Juncaceae 44 counties
• 
  Juncus canadensis J. Gay ex Laharpe Native JUCA3

  Canadian rush · Juncaceae 4 counties
• 
  Juncus coriaceus Mack. Native JUCO4

  leathery rush · Juncaceae 40 counties
• 
  Juncus debilis A. Gray Native JUDE

  weak rush · Juncaceae 7 counties
• 
  Juncus dichotomus Elliott Native JUDI

  forked rush · Juncaceae 52 counties
• 
  Juncus diffusissimus Buckley Native JUDI2

  slimpod rush · Juncaceae 54 counties
• 
  Juncus dudleyi Wiegand Native JUDU2

  Dudley's rush · Juncaceae 17 counties
• 
  Juncus effusus L. Native JUEF

  common rush · Juncaceae 63 counties
• 
  Juncus effusus L. var. solutus Fernald & Wiegand Native JUEFS

  lamp rush · Juncaceae 63 counties
• 
  Juncus elliottii Chapm. Native JUEL

  Elliott's rush · Juncaceae 14 counties
• 
  Juncus elliottii Chapm. var. elliottii Native JUELE

  Elliott's rush · Juncaceae 14 counties
• 
  Juncus filipendulus Buckley Native JUFI2

  ringseed rush · Juncaceae 1 county
• 
  Juncus interior Wiegand Native JUIN2

  inland rush · Juncaceae 20 counties
• 
  Juncus interior Wiegand var. interior Native JUINI

  inland rush · Juncaceae 20 counties
• 
  Juncus longii Fernald Native JULO2

  Long's rush · Juncaceae 1 county
• 
  Juncus marginatus Rostk. Native JUMA4

  grassleaf rush · Juncaceae 59 counties
• 
  Juncus megacephalus M.A. Curtis Native JUME

  bighead rush · Juncaceae 9 counties
• 
  Juncus nodatus Coville Native JUNO

  stout rush · Juncaceae 39 counties
• 
  Juncus paludosus E.L. Bridges & Orzell Native JUPA3

  swamp rush · Juncaceae 2 counties
• ⚘
  Juncus polycephalos Michx. Native JUPO5

  manyhead rush · Juncaceae 19 counties
• 
  Juncus repens Michx. Native JURE2

  lesser creeping rush · Juncaceae 30 counties
• 
  Juncus roemerianus Scheele Native JURO

  needlegrass rush · Juncaceae 12 counties
• 
  Juncus scirpoides Lam. Native JUSC

  needlepod rush · Juncaceae 35 counties
• 
  Juncus secundus P. Beauv. ex Poir. Native JUSE

  lopsided rush · Juncaceae 2 counties
• 
  Juncus tenuis Willd. Native JUTE

  poverty rush · Juncaceae 61 counties
• 
  Juncus torreyi Coville Native JUTO

  Torrey's rush · Juncaceae 17 counties
• 
  Juncus trigonocarpus Steud. Native JUTR5

  redpod rush · Juncaceae 5 counties
• 
  Juncus validus Coville Native JUVA2

  roundhead rush · Juncaceae 50 counties