| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| HEMI15 | Hedyotis michauxii Fosberg | Houstonia serpyllifolia | Rubiaceae
|
| HEMO6 | Hedyotis molokaiensis Fosberg | Hedyotis mannii | Rubiaceae
|
| HEMU6 | Hedyotis mullerae Fosberg | Muller's starviolet | Rubiaceae
|
| HENIA | Hedyotis nigricans (Lam.) Fosberg var. angulata (Fosberg ex Shinners) W.H. Lewis | Hedyotis angulata | Rubiaceae
|
| HENIA2 | Hedyotis nigricans (Lam.) Fosberg var. austrotexana B.L. Turner | diamondflowers | Rubiaceae
|
| HENIF2 | Hedyotis nigricans (Lam.) Fosberg var. filifolia (Chapman) Shinners | Hedyotis nigricans var. nigricans | Rubiaceae
|
| HENIF | Hedyotis nigricans (Lam.) Fosberg var. floridana (Standl.) Wunderlin | Florida diamondflowers | Rubiaceae
|
| HENIN | Hedyotis nigricans (Lam.) Fosberg var. nigricans | diamondflowers | Rubiaceae
|
| HENIP3 | Hedyotis nigricans (Lam.) Fosberg var. papillacea B.L. Turner | diamondflowers | Rubiaceae
|
| HENIP2 | Hedyotis nigricans (Lam.) Fosberg var. parviflora (Gray) W.H. Lewis | Hedyotis angulata | Rubiaceae
|
| HENIP | Hedyotis nigricans (Lam.) Fosberg var. pulvinata (Small) Fosberg | diamondflowers | Rubiaceae
|
| HENIR | Hedyotis nigricans (Lam.) Fosberg var. rigidiuscula (Gray) Shinners | Hedyotis nigricans var. nigricans | Rubiaceae
|
| HENIS | Hedyotis nigricans (Lam.) Fosberg var. scabra (S. Wats.) Fosberg | Hedyotis nigricans var. nigricans | Rubiaceae
|
| HENI4 | Hedyotis nigricans (Lam.) Fosberg | diamondflowers | Rubiaceae
|
| HENU2 | Hedyotis nuttalliana Fosberg | Houstonia longifolia | Rubiaceae
|
| HEOU | Hedyotis ouachitana E.B. Sm. | Houstonia ouachitana | Rubiaceae
|
| HEPA14 | Hedyotis parvula (Gray) Fosberg | rockface starviolet | Rubiaceae
|
| HEPE5 | Hedyotis pentandra K. Schum. | Pentodon pentandrus | Rubiaceae
|
| HEPO5 | Hedyotis polypremoides (Gray) Shinners | Houstonia acerosa | Rubiaceae
|
| HEPO10 | Hedyotis ponapensis Valeton | hedyotis | Rubiaceae
|
| HEPO11 | Hedyotis pooleana B.L. Turner | Poole's starviolet | Rubiaceae
|
| HEPRH2 | Hedyotis procumbens (Walt. ex J.F. Gmel.) Fosberg var. hirsuta W.H. Lewis | Houstonia procumbens | Rubiaceae
|
| HEPR7 | Hedyotis procumbens (Walt. ex J.F. Gmel.) Fosberg | Houstonia procumbens | Rubiaceae
|
| HEPUC2 | Hedyotis purpurea (L.) Torr. & Gray var. calycosa (Gray) Fosberg | Houstonia purpurea var. calycosa | Rubiaceae
|
| HEPUC | Hedyotis purpurea (L.) Torr. & Gray var. ciliolata (Torr.) Fosberg | Houstonia canadensis | Rubiaceae
|
| HEPUF | Hedyotis purpurea (L.) Torr. & Gray var. floridana (Standl.) Fosberg | Hedyotis nigricans var. floridana | Rubiaceae
|
| HEPUL2 | Hedyotis purpurea (L.) Torr. & Gray var. longifolia (Gaertn.) Fosberg | Houstonia longifolia | Rubiaceae
|
| HEPUM2 | Hedyotis purpurea (L.) Torr. & Gray var. montana (Small) Fosberg | Houstonia purpurea var. montana | Rubiaceae
|
| HEPUS3 | Hedyotis purpurea (L.) Torr. & Gray var. setiscaphia (L.G. Carr) Fosberg | Houstonia canadensis | Rubiaceae
|
| HEPUT | Hedyotis purpurea (L.) Torr. & Gray var. tenuifolia (Nutt.) Fosberg | Houstonia longifolia | Rubiaceae
|
| HEPU16 | Hedyotis purpurea (L.) Torr. & Gray | Houstonia purpurea var. purpurea | Rubiaceae
|
| HEPY | Hedyotis pygmaea Roemer & J.A. Schultes | Houstonia wrightii | Rubiaceae
|
| HEREN | Hedyotis remyi (Hbd.) Fosberg var. nuttallii (Fosberg) Fosberg | Hedyotis schlechtendahliana var. schlechtendahliana | Rubiaceae
|
| HEREP | Hedyotis remyi (Hbd.) Fosberg var. plana (Fosberg) Fosberg | Hedyotis schlechtendahliana var. schlechtendahliana | Rubiaceae
|
| HERES2 | Hedyotis remyi (Hbd.) Fosberg var. silvicola Fosberg | Hedyotis schlechtendahliana var. schlechtendahliana | Rubiaceae
|
| HERE4 | Hedyotis remyi (Hbd.) Fosberg | Hedyotis schlechtendahliana var. remyi | Rubiaceae
|
| HERO3 | Hedyotis rosea Raf. | Houstonia rosea | Rubiaceae
|
| HERU4 | Hedyotis rubra (Cav.) Gray | Houstonia rubra | Rubiaceae
|
| HESA7 | Hedyotis salina (Heller) Shinners | Hedyotis nigricans var. nigricans | Rubiaceae
|
| HESA9 | Hedyotis salzmannii (DC.) Steud. | Oldenlandia salzmannii | Rubiaceae
|
| HESCR | Hedyotis schlechtendahliana Steud. ssp. rockii Fosberg | Hedyotis schlechtendahliana var. schlechtendahliana | Rubiaceae
|
| HESCT | Hedyotis schlechtendahliana Steud. ssp. tenuifolia Fosberg | Hedyotis schlechtendahliana var. schlechtendahliana | Rubiaceae
|
| HESCG | Hedyotis schlechtendahliana Steud. var. glauca (Meyen) Fosberg | Hedyotis schlechtendahliana var. schlechtendahliana | Rubiaceae
|
| HESCN2 | Hedyotis schlechtendahliana Steud. var. nitens (Wawra) Fosberg | Hedyotis schlechtendahliana var. schlechtendahliana | Rubiaceae
|
| HESCN3 | Hedyotis schlechtendahliana Steud. var. nuttallii Fosberg | Hedyotis schlechtendahliana var. schlechtendahliana | Rubiaceae
|
| HESCO2 | Hedyotis schlechtendahliana Steud. var. opaca (Wawra) Fosberg | Hedyotis schlechtendahliana var. schlechtendahliana | Rubiaceae
|
| HESCP | Hedyotis schlechtendahliana Steud. var. plana Fosberg | Hedyotis schlechtendahliana var. schlechtendahliana | Rubiaceae
|
| HESCR3 | Hedyotis schlechtendahliana Steud. var. remyi (Hbd.) Fosberg | kopa | Rubiaceae
|
| HESCR4 | Hedyotis schlechtendahliana Steud. var. reticulata Fosberg | Hedyotis schlechtendahliana var. schlechtendahliana | Rubiaceae
|
| HESCS2 | Hedyotis schlechtendahliana Steud. var. schlechtendahliana | kopa | Rubiaceae
|
| HESCS | Hedyotis schlechtendahliana Steud. var. secundiflora (Hbd.) Fosberg | Hedyotis schlechtendahliana var. schlechtendahliana | Rubiaceae
|
| HESC6 | Hedyotis schlechtendahliana Steud. | kopa | Rubiaceae
|
| HEST2 | Hedyotis st.-johnii B.C. Stone & M.A. Lane | Napali Beach starviolet | Rubiaceae
|
| HESTP | Hedyotis stenophylla Torr. & Gray var. parviflora Gray | Hedyotis angulata | Rubiaceae
|
| HESU8 | Hedyotis subviscosa (C. Wright ex Gray) Shinners | Houstonia subviscosa | Rubiaceae
|
| HETA | Hedyotis tayloriae Fosberg | Houstonia rosea | Rubiaceae
|
| HETE21 | Hedyotis terminalis (Hook. & Arn.) W.L. Wagner & Herbst | variable starviolet | Rubiaceae
|
| HETHH | Hedyotis thyrsoidea Fosberg var. hillebrandii Fosberg | Hedyotis mannii | Rubiaceae
|
| HETH2 | Hedyotis thyrsoidea Fosberg | Hedyotis mannii | Rubiaceae
|
| HETR6 | Hedyotis tryblium Herbst & W.L. Wagner | Kalalau Valley starviolet | Rubiaceae
|
| HEUNF | Hedyotis uniflora (L.) Lam. var. fasciculata (Bertol.) W.H. Lewis | Oldenlandia uniflora | Rubiaceae
|
| HEUN5 | Hedyotis uniflora (L.) Lam. | Oldenlandia uniflora | Rubiaceae
|
| HEVE4 | Hedyotis vegrandis W.H. Lewis | New Mexico starviolet | Rubiaceae
|
| HEWR | Hedyotis wrightii (Gray) Fosberg | Houstonia wrightii | Rubiaceae
|
| HEDYO2 | Hedyotis L. | starviolet | Rubiaceae
|
| HECR2 | Hedypnois cretica (L.) Dum.-Cours. | Cretanweed | Asteraceae
|
| HEDYP | Hedypnois P. Mill. | hedypnois | Asteraceae
|
| HEALA2 | Hedysarum alpinum L. ssp. americanum (Michx.) Fedtsch. | Hedysarum alpinum | Fabaceae
|
| HEALA | Hedysarum alpinum L. var. americanum Michx. | Hedysarum alpinum | Fabaceae
|
| HEALG | Hedysarum alpinum L. var. grandiflorum Rollins | Hedysarum alpinum | Fabaceae
|
| HEALP | Hedysarum alpinum L. var. philoscia (A. Nels.) Rollins | Hedysarum alpinum | Fabaceae
|
| HEAL | Hedysarum alpinum L. | alpine sweetvetch | Fabaceae
|
| HEAM9 | Hedysarum americanum (Michx.) Britt. | Hedysarum alpinum | Fabaceae
|
| HEBOB2 | Hedysarum boreale Nutt. ssp. boreale var. boreale | boreal sweetvetch | Fabaceae
|
| HEBOG2 | Hedysarum boreale Nutt. ssp. boreale var. gremiale (Rollins) Northstrom & Welsh | boreal sweetvetch | Fabaceae
|
| HEBOB | Hedysarum boreale Nutt. ssp. boreale | boreal sweetvetch | Fabaceae
|
| HEBOM | Hedysarum boreale Nutt. ssp. mackenziei (Richards.) Welsh | boreal sweetvetch | Fabaceae
|
| HEBOC | Hedysarum boreale Nutt. var. cinerascens (Rydb.) Rollins | Hedysarum boreale ssp. boreale var. boreale | Fabaceae
|
| HEBOM3 | Hedysarum boreale Nutt. var. mackenziei (Richards.) C.L. Hitchc. | Hedysarum boreale ssp. mackenziei | Fabaceae
|
| HEBOO2 | Hedysarum boreale Nutt. var. obovatum Rollins | Hedysarum boreale ssp. boreale var. boreale | Fabaceae
|
| HEBOP | Hedysarum boreale Nutt. var. pabulare (A. Nels.) Dorn | Hedysarum boreale ssp. boreale var. boreale | Fabaceae
|
| HEBOR | Hedysarum boreale Nutt. var. rivulare (L.O. Williams) Northstrom | Hedysarum boreale ssp. boreale var. boreale | Fabaceae
|
| HEBOT | Hedysarum boreale Nutt. var. typicum Rollins | Hedysarum boreale ssp. boreale var. boreale | Fabaceae
|
| HEBOU2 | Hedysarum boreale Nutt. var. utahense (Rydb.) Rollins | Hedysarum boreale ssp. boreale var. boreale | Fabaceae
|
| HEBO | Hedysarum boreale Nutt. | boreal sweetvetch | Fabaceae
|
| HECI7 | Hedysarum cinerascens Rydb. | Hedysarum boreale ssp. boreale var. boreale | Fabaceae
|
| HECO24 | Hedysarum coronarium L. | sulla | Fabaceae
|
| HEGE2 | Hedysarum gemellum Willd. ex Vogel (pro syn.) | Zornia gemella | Fabaceae
|
| HEGR80 | Hedysarum grandiflorum Walt., non Pall. | Desmodium cuspidatum var. cuspidatum | Fabaceae
|
| HEGR15 | Hedysarum gremiale Rollins | Hedysarum boreale ssp. boreale var. gremiale | Fabaceae
|
| HEHE2 | Hedysarum hedysaroides auct. non (L.) Schinz & Thellung | Hedysarum alpinum | Fabaceae
|
| HEMAF | Hedysarum mackenziei Richards. var. fraseri Boivin | Hedysarum boreale ssp. boreale var. boreale | Fabaceae
|
| HEMA | Hedysarum mackenziei Richards. | Hedysarum boreale ssp. mackenziei | Fabaceae
|
| HEMO10 | Hedysarum molle Vahl | Desmodium glabrum | Fabaceae
|
| HEMO11 | Hedysarum mongolicum Turcz. | sweetvetch | Fabaceae
|
| HEOCC | Hedysarum occidentale Greene var. canone Welsh | western sweetvetch | Fabaceae
|
| HEOCO2 | Hedysarum occidentale Greene var. occidentale | western sweetvetch | Fabaceae
|
| HEOC | Hedysarum occidentale Greene | western sweetvetch | Fabaceae
|
| HEON | Hedysarum onobrychis L. | Onobrychis viciifolia | Fabaceae
|
| HEPAR3 | Hedysarum pabulare A. Nels. var. rivulare L.O. Williams | Hedysarum boreale ssp. boreale var. boreale | Fabaceae
|
| HEPE4 | Hedysarum pedunculatum P. Mill. | Orbexilum pedunculatum var. pedunculatum | Fabaceae
|