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 1,151–1,200 of 2,926 (native).

• 
  Helenium autumnale L. var. autumnale Native HEAUA

  common sneezeweed · Asteraceae 11 counties
• 
  Helenium brevifolium (Nutt.) Alph. Wood Native HEBR

  shortleaf sneezeweed · Asteraceae 2 counties
• 
  Helenium campestre Small Native HECA13

  oldfield sneezeweed · Asteraceae 2 counties
• 
  Helenium drummondii H. Rock Native HEDR2

  fringed sneezeweed · Asteraceae 9 counties
• 
  Helenium flexuosum Raf. Native HEFL

  purplehead sneezeweed · Asteraceae 40 counties
• 
  Helenium quadridentatum Labill. Native HEQU

  longdisk sneezeweed · Asteraceae 13 counties
• 
  Helenium vernale Walter Native HEVE

  savannah sneezeweed · Asteraceae 7 counties
• 
  Helianthemum carolinianum (Walter) Michx. Native HECA4

  Carolina frostweed · Cistaceae 20 counties
• 
  Helianthemum georgianum Chapm. Native HEGE

  Georgia frostweed · Cistaceae 8 counties
• 
  Helianthemum rosmarinifolium Pursh Native HERO2

  rosemary frostweed · Cistaceae 1 county
• 
  Helianthus angustifolius L. Native HEAN2

  swamp sunflower · Asteraceae 43 counties
• 
  Helianthus annuus L. Native HEAN3

  common sunflower · Asteraceae 30 counties
• 
  Helianthus atrorubens L. Native HEAT

  purpledisk sunflower · Asteraceae 9 counties
• 
  Helianthus debilis Nutt. Native HEDE4

  cucumberleaf sunflower · Asteraceae 3 counties
• 
  Helianthus debilis Nutt. ssp. cucumerifolius (Torr. & A. Gray) Heiser Native HEDEC2

  cucumberleaf sunflower · Asteraceae 3 counties
• 
  Helianthus decapetalus L. Native HEDE

  thinleaf sunflower · Asteraceae 1 county
• 
  Helianthus divaricatus L. Native HEDI2

  woodland sunflower · Asteraceae 14 counties
• 
  Helianthus floridanus A. Gray ex Chapm. Native HEFL2

  Florida sunflower · Asteraceae 8 counties
• 
  Helianthus grosseserratus M. Martens Native HEGR4

  sawtooth sunflower · Asteraceae 13 counties
• 
  Helianthus heterophyllus Nutt. Native HEHE4

  variableleaf sunflower · Asteraceae 3 counties
• 
  Helianthus hirsutus Raf. Native HEHI2

  hairy sunflower · Asteraceae 36 counties
• 
  Helianthus microcephalus Torr. & A. Gray Native HEMI3

  small woodland sunflower · Asteraceae 5 counties
• 
  Helianthus mollis Lam. Native HEMO2

  ashy sunflower · Asteraceae 16 counties
• 
  Helianthus occidentalis Riddell Native HEOC2

  fewleaf sunflower · Asteraceae 3 counties
• 
  Helianthus occidentalis Riddell ssp. plantagineus (Torr. & A. Gray) Shinners Native HEOCP

  fewleaf sunflower · Asteraceae 3 counties
• 
  Helianthus petiolaris Nutt. Native HEPE

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

  prairie sunflower · Asteraceae 3 counties
• 
  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 curassavicum L. Native HECU3

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

  salt heliotrope · Boraginaceae 19 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
• 
  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