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 1,501–1,550 of 3,739.

• 
  Helianthus radula (Pursh) Torr. & A. Gray Native HERA

  rayless sunflower · Asteraceae 4 counties
• 
  Helianthus silphioides Nutt. Native HESI

  rosinweed sunflower · Asteraceae 4 counties
• 
  Helianthus simulans E.E. Watson Native HESI2

  muck sunflower · Asteraceae 23 counties
• 
  Helianthus strumosus L. Native HEST

  paleleaf woodland sunflower · Asteraceae 19 counties
• 
  Helianthus tuberosus L. Native HETU

  Jerusalem artichoke · Asteraceae 17 counties
• ⚘
  Helianthus ×glaucus Small (pro sp.) [divaricatus × microcephalus] Native HEGL10

  sunflower · Asteraceae 1 county
• 
  Heliopsis helianthoides (L.) Sweet Native HEHE5

  smooth oxeye · Asteraceae 16 counties
• 
  Heliopsis helianthoides (L.) Sweet var. gracilis (Nutt.) Gandhi & R.D. Thomas Native HEHEG

  smooth oxeye · Asteraceae 11 counties
• 
  Heliopsis helianthoides (L.) Sweet var. helianthoides Native HEHEH

  smooth oxeye · Asteraceae 10 counties
• 
  Heliotropium amplexicaule Vahl Introduced HEAM4

  clasping heliotrope · Boraginaceae 3 counties
• 
  Heliotropium curassavicum L. Native HECU3

  salt heliotrope · Boraginaceae 19 counties
• 
  Heliotropium curassavicum L. var. curassavicum Native HECUC2

  salt heliotrope · Boraginaceae 19 counties
• 
  Heliotropium indicum L. Introduced HEIN

  Indian heliotrope · Boraginaceae 63 counties
• 
  Heliotropium procumbens Mill. Native HEPR3

  fourspike heliotrope · Boraginaceae 44 counties
• 
  Heliotropium procumbens Mill. var. procumbens Native HEPRP2

  fourspike heliotrope · Boraginaceae 44 counties
• 
  Heliotropium tenellum (Nutt.) Torr. Native HETE3

  pasture heliotrope · Boraginaceae 4 counties
• 
  Hemerocallis fulva (L.) L. Introduced HEFU

  orange daylily · Liliaceae 25 counties
• 
  Hemigraphis reptans (G. Forst.) T. Anderson ex Hemsl. Introduced HERE6

  redflame · Acanthaceae 1 county
• 
  Herbertia lahue (Molina) Goldblatt Native HELA6

  prairienymph · Iridaceae 6 counties
• 
  Herbertia lahue (Molina) Goldblatt ssp. caerulea (Herb.) Goldblatt Native HELAC

  prairienymph · Iridaceae 6 counties
• 
  Heteranthera dubia (Jacq.) MacMill. Native HEDU2

  grassleaf mudplantain · Pontederiaceae 13 counties
• 
  Heteranthera limosa (Sw.) Willd. Native HELI2

  blue mudplantain · Pontederiaceae 30 counties
• 
  Heteranthera reniformis Ruiz & Pav. Native HERE

  kidneyleaf mudplantain · Pontederiaceae 17 counties
• 
  Heterotheca subaxillaris (Lam.) Britton & Rusby Native HESU3

  camphorweed · Asteraceae 46 counties
• 
  Heuchera americana L. Native HEAM6

  American alumroot · Saxifragaceae 4 counties
• 
  Heuchera americana L. var. americana Native HEAMA2

  American alumroot · Saxifragaceae 4 counties
• 
  Hexalectris spicata (Walter) Barnhart Native HESP3

  spiked crested coralroot · Orchidaceae 10 counties
• 
  Hexalectris spicata (Walter) Barnhart var. spicata Native HESPS3

  spiked crested coralroot · Orchidaceae 10 counties
• 
  Hexastylis arifolia (Michx.) Small Native HEAR6

  littlebrownjug · Aristolochiaceae 5 counties
• 
  Hibiscus aculeatus Walter Native HIAC

  comfortroot · Malvaceae 11 counties
• 
  Hibiscus coccineus Walter Native HICO2

  scarlet rosemallow · Malvaceae 6 counties
• 
  Hibiscus grandiflorus Michx. Native HIGR4

  swamp rosemallow · Malvaceae 3 counties
• 
  Hibiscus laevis All. Native HILA2

  halberdleaf rosemallow · Malvaceae 45 counties
• 
  Hibiscus moscheutos L. Native HIMO

  crimsoneyed rosemallow · Malvaceae 61 counties
• 
  Hibiscus mutabilis L. Introduced HIMU3

  Dixie rosemallow · Malvaceae 2 counties
• 
  Hibiscus syriacus L. Introduced HISY

  rose of Sharon · Malvaceae 25 counties
• 
  Hibiscus trionum L. Introduced HITR

  flower of an hour · Malvaceae 4 counties
• 
  Hieracium gronovii L. Native HIGR3

  queendevil · Asteraceae 35 counties
• 
  Hieracium longipilum Torr. Native HILO2

  hairy hawkweed · Asteraceae 3 counties
• 
  Holcus lanatus L. Introduced HOLA

  common velvetgrass · Poaceae 10 counties
• 
  Hordeum pusillum Nutt. Native HOPU

  little barley · Poaceae 63 counties
• 
  Hordeum vulgare L. Introduced HOVU

  common barley · Poaceae 13 counties
• 
  Hottonia inflata Elliott Native HOIN

  American featherfoil · Primulaceae 18 counties
• 
  Houstonia caerulea L. Native HOCA4

  azure bluet · Rubiaceae 7 counties
• 
  Houstonia micrantha (Shinners) Terrell Native HOMI4

  southern bluet · Rubiaceae 35 counties
• 
  Houstonia procumbens (Walter ex J.F. Gmel.) Standl. Native HOPR

  roundleaf bluet · Rubiaceae 4 counties
• 
  Houstonia purpurea L. Native HOPU2

  Venus' pride · Rubiaceae 13 counties
• 
  Houstonia purpurea L. var. calycosa A. Gray Native HOPUC

  Venus' pride · Rubiaceae 4 counties
• 
  Houstonia purpurea L. var. purpurea Native HOPUP3

  Venus' pride · Rubiaceae 9 counties
• 
  Houstonia pusilla Schoepf Native HOPU3

  tiny bluet · Rubiaceae 50 counties