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 1,201–1,250 of 2,926 (native).

• 
  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
• 
  Hieracium gronovii L. Native HIGR3

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

  hairy hawkweed · Asteraceae 3 counties
• 
  Hordeum pusillum Nutt. Native HOPU

  little barley · Poaceae 63 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
• 
  Houstonia rosea (Raf.) Terrell Native HORO

  rose bluet · Rubiaceae 31 counties
• 
  Hydrangea arborescens L. Native HYAR

  wild hydrangea · Hydrangeaceae 7 counties
• 
  Hydrangea quercifolia W. Bartram Native HYQU3

  oakleaf hydrangea · Hydrangeaceae 17 counties
• 
  Hydrocotyle bonariensis Comm. ex Lam. Native HYBO

  largeleaf pennywort · Apiaceae 13 counties
• 
  Hydrocotyle ranunculoides L. f. Native HYRA

  floating marshpennywort · Apiaceae 38 counties
• 
  Hydrocotyle umbellata L. Native HYUM

  manyflower marshpennywort · Apiaceae 41 counties
• 
  Hydrocotyle verticillata Thunb. Native HYVE2

  whorled marshpennywort · Apiaceae 62 counties
• 
  Hydrocotyle verticillata Thunb. var. verticillata Native HYVEV

  whorled marshpennywort · Apiaceae 62 counties
• 
  Hydrolea ovata Nutt. ex Choisy Native HYOV

  ovate false fiddleleaf · Hydrophyllaceae 38 counties
• 
  Hydrolea quadrivalvis Walter Native HYQU

  waterpod · Hydrophyllaceae 7 counties
• 
  Hydrolea uniflora Raf. Native HYUN

  oneflower false fiddleleaf · Hydrophyllaceae 52 counties
• 
  Hygrophila lacustris (Schltdl. & Cham.) Nees Native HYLA

  gulf swampweed · Acanthaceae 29 counties
• 
  Hylotelephium telephioides (Michx.) H. Ohba Native HYTE9

  Allegheny stonecrop · Crassulaceae 2 counties
• 
  Hymenocallis liriosme (Raf.) Shinners Native HYLI

  spring spiderlily · Liliaceae 30 counties
• 
  Hymenocallis occidentalis (Leconte) Kunth Native HYOC2

  northern spiderlily · Liliaceae 1 county
• 
  Hymenocallis occidentalis (Leconte) Kunth var. occidentalis Native HYOCO

  northern spiderlily · Liliaceae 1 county
• 
  Hymenopappus artemisiifolius DC. Native HYAR3

  oldplainsman · Asteraceae 14 counties
• 
  Hymenopappus artemisiifolius DC. var. artemisiifolius Native HYARA

  oldplainsman · Asteraceae 14 counties
• 
  Hymenopappus scabiosaeus L'Hér. Native HYSC

  Carolina woollywhite · Asteraceae 9 counties
• 
  Hymenopappus scabiosaeus L'Hér. var. scabiosaeus Native HYSCS

  Carolina woollywhite · Asteraceae 9 counties
• 
  Hypericum brachyphyllum (Spach) Steud. Native HYBR3

  coastal plain St. Johnswort · Clusiaceae 5 counties
• 
  Hypericum cistifolium Lam. Native HYCI

  roundpod St. Johnswort · Clusiaceae 9 counties
• 
  Hypericum crux-andreae (L.) Crantz Native HYCR3

  St. Peterswort · Clusiaceae 36 counties
• 
  Hypericum densiflorum Pursh Native HYDE

  bushy St. Johnswort · Clusiaceae 28 counties
• 
  Hypericum drummondii (Grev. & Hook.) Torr. & A. Gray Native HYDR

  nits and lice · Clusiaceae 48 counties
• 
  Hypericum fasciculatum Lam. Native HYFA

  peelbark St. Johnswort · Clusiaceae 13 counties
• 
  Hypericum frondosum Michx. Native HYFR

  cedarglade St. Johnswort · Clusiaceae 15 counties
• 
  Hypericum galioides Lam. Native HYGA

  bedstraw St. Johnswort · Clusiaceae 18 counties
• 
  Hypericum gentianoides (L.) Britton, Sterns & Poggenb. Native HYGE

  orangegrass · Clusiaceae 27 counties
• 
  Hypericum gymnanthum Engelm. & A. Gray Native HYGY

  claspingleaf St. Johnswort · Clusiaceae 29 counties
• 
  Hypericum hypericoides (L.) Crantz Native HYHY

  St. Andrew's cross · Clusiaceae 58 counties
• 
  Hypericum hypericoides (L.) Crantz ssp. hypericoides Native HYHYH

  St. Andrew's cross · Clusiaceae 58 counties