| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| HEHYS | Heterotheca hyssopifolia (Nutt.) R.W. Long var. subulata (Small) R.W. Long | Chrysopsis subulata | Asteraceae
|
| HEHY2 | Heterotheca hyssopifolia (Nutt.) R.W. Long | Chrysopsis gossypina ssp. hyssopifolia | Asteraceae
|
| HEJO | Heterotheca jonesii (Blake) Welsh & Atwood | Jones' false goldenaster | Asteraceae
|
| HELA20 | Heterotheca lamarckii Cass. | Heterotheca subaxillaris | Asteraceae
|
| HELAA | Heterotheca latifolia Buckl. var. arkansana Wagenkn. | Heterotheca subaxillaris | Asteraceae
|
| HELAM | Heterotheca latifolia Buckl. var. macgregoris Wagenkn. | Heterotheca subaxillaris | Asteraceae
|
| HELA5 | Heterotheca latifolia Buckl. | Heterotheca subaxillaris | Asteraceae
|
| HELA9 | Heterotheca latisquamea (Pollard) Harms | Chrysopsis latisquamea | Asteraceae
|
| HEMA20 | Heterotheca marginata Semple | Sonora false goldenaster | Asteraceae
|
| HEMAF2 | Heterotheca mariana (L.) Shinners ssp. floridana (Small) Harms | Chrysopsis floridana | Asteraceae
|
| HEMAM2 | Heterotheca mariana (L.) Shinners var. macradenia (Fern.) Harms | Chrysopsis mariana | Asteraceae
|
| HEMA10 | Heterotheca mariana (L.) Shinners | Chrysopsis mariana | Asteraceae
|
| HEMI12 | Heterotheca microcephala (Small) Shinners | Pityopsis graminifolia var. tenuifolia | Asteraceae
|
| HEMO14 | Heterotheca monarchensis York, Shevock & Semple | Sequoia false goldenaster | Asteraceae
|
| HENEM | Heterotheca nervosa (Willd.) Shinners var. microcephala (Small) Shinners ex Ahles | Pityopsis graminifolia var. tenuifolia | Asteraceae
|
| HENE3 | Heterotheca nervosa (Willd.) Shinners | Pityopsis graminifolia var. graminifolia | Asteraceae
|
| HEOL | Heterotheca oligantha (Chapman ex Torr. & Gray) Harms | Pityopsis oligantha | Asteraceae
|
| HEORC | Heterotheca oregona (Nutt.) Shinners var. compacta (Keck) Semple | Oregon false goldenaster | Asteraceae
|
| HEORO | Heterotheca oregona (Nutt.) Shinners var. oregona | Oregon false goldenaster | Asteraceae
|
| HEORR | Heterotheca oregona (Nutt.) Shinners var. rudis (Greene) Semple | Oregon false goldenaster | Asteraceae
|
| HEORS | Heterotheca oregona (Nutt.) Shinners var. scaberrima (Gray) Semple | Oregon false goldenaster | Asteraceae
|
| HEOR2 | Heterotheca oregona (Nutt.) Shinners | Oregon false goldenaster | Asteraceae
|
| HEPI5 | Heterotheca pilosa (Nutt.) Shinners | Chrysopsis pilosa | Asteraceae
|
| HEPI6 | Heterotheca pinifolia (Ell.) Ahles | Pityopsis pinifolia | Asteraceae
|
| HEPS | Heterotheca psammophila Wagenkn. | Heterotheca subaxillaris | Asteraceae
|
| HEPU14 | Heterotheca pumila (Greene) Semple | alpine false goldenaster | Asteraceae
|
| HERU2 | Heterotheca ruthii (Small) Harms | Pityopsis ruthii | Asteraceae
|
| HERU3 | Heterotheca rutteri (Rothrock) Shinners | Rutter's false goldenaster | Asteraceae
|
| HESC11 | Heterotheca scabra (Pursh) DC. | Heterotheca subaxillaris | Asteraceae
|
| HESC7 | Heterotheca scabrella (Torr. & Gray) Harms | Chrysopsis scabrella | Asteraceae
|
| HESEB2 | Heterotheca sessiliflora (Nutt.) Shinners ssp. bolanderi (Gray) Semple | sessileflower false goldenaster | Asteraceae
|
| HESEB3 | Heterotheca sessiliflora (Nutt.) Shinners ssp. echioides (Benth.) Semple var. bolanderioides Semple | sessileflower false goldenaster | Asteraceae
|
| HESEC | Heterotheca sessiliflora (Nutt.) Shinners ssp. echioides (Benth.) Semple var. camphorata (Eastw.) Semple | sessileflower false goldenaster | Asteraceae
|
| HESEE3 | Heterotheca sessiliflora (Nutt.) Shinners ssp. echioides (Benth.) Semple var. echioides (Benth.) Semple, comb. nov. ined. | sessileflower false goldenaster | Asteraceae
|
| HESEE2 | Heterotheca sessiliflora (Nutt.) Shinners ssp. echioides (Benth.) Semple | sessileflower false goldenaster | Asteraceae
|
| HESEF3 | Heterotheca sessiliflora (Nutt.) Shinners ssp. fastigiata (Greene) Semple var. fastigiata (Greene) Semple, comb. nov. ined. | sessileflower false goldenaster | Asteraceae
|
| HESES | Heterotheca sessiliflora (Nutt.) Shinners ssp. fastigiata (Greene) Semple var. sanjacintensis Semple | sessileflower false goldenaster | Asteraceae
|
| HESEF2 | Heterotheca sessiliflora (Nutt.) Shinners ssp. fastigiata (Greene) Semple | sessileflower false goldenaster | Asteraceae
|
| HESES2 | Heterotheca sessiliflora (Nutt.) Shinners ssp. sessiliflora | sessileflower false goldenaster | Asteraceae
|
| HESE | Heterotheca sessiliflora (Nutt.) Shinners | sessileflower false goldenaster | Asteraceae
|
| HESH4 | Heterotheca shevockii (Semple) Semple | Kern Canyon false goldenaster | Asteraceae
|
| HESTA | Heterotheca stenophylla (Gray) Shinners var. angustifolia (Rydb.) Semple | stiffleaf false goldenaster | Asteraceae
|
| HESTS | Heterotheca stenophylla (Gray) Shinners var. stenophylla | stiffleaf false goldenaster | Asteraceae
|
| HEST3 | Heterotheca stenophylla (Gray) Shinners | stiffleaf false goldenaster | Asteraceae
|
| HESUL | Heterotheca subaxillaris (Lam.) Britt. & Rusby var. latifolia (Buckl.) Gandhi & Thomas | Heterotheca subaxillaris | Asteraceae
|
| HESUP | Heterotheca subaxillaris (Lam.) Britt. & Rusby var. petiolaris Benke | Heterotheca subaxillaris | Asteraceae
|
| HESUP3 | Heterotheca subaxillaris (Lam.) Britt. & Rusby var. procumbens Wagenkn. | Heterotheca subaxillaris | Asteraceae
|
| HESUP2 | Heterotheca subaxillaris (Lam.) Britt. & Rusby var. psammophila (Wagenkn.) Gandhi | Heterotheca subaxillaris | Asteraceae
|
| HESU3 | Heterotheca subaxillaris (Lam.) Britt. & Rusby | camphorweed | Asteraceae
|
| HESU5 | Heterotheca subulata (Small) Harms | Chrysopsis subulata | Asteraceae
|
| HETR4 | Heterotheca trichophylla (Nutt.) Shinners | Chrysopsis gossypina ssp. gossypina | Asteraceae
|
| HEVIA2 | Heterotheca villosa (Pursh) Shinners var. angustifolia (Rydb.) Semple | Heterotheca stenophylla var. angustifolia | Asteraceae
|
| HEVIB | Heterotheca villosa (Pursh) Shinners var. ballardii (Rydb.) Semple | hairy false goldenaster | Asteraceae
|
| HEVIC | Heterotheca villosa (Pursh) Shinners var. camporum (Greene) Wunderlin | Heterotheca camporum var. camporum | Asteraceae
|
| HEVID | Heterotheca villosa (Pursh) Shinners var. depressa (Rydb.) Semple | hairy false goldenaster | Asteraceae
|
| HEVIF | Heterotheca villosa (Pursh) Shinners var. foliosa (Nutt.) Harms | hairy false goldenaster | Asteraceae
|
| HEVIH | Heterotheca villosa (Pursh) Shinners var. hispida (Hook.) Harms | Heterotheca villosa var. minor | Asteraceae
|
| HEVIH2 | Heterotheca villosa (Pursh) Shinners var. horrida (Hook.) Semple | Heterotheca villosa var. nana | Asteraceae
|
| HEVIM3 | Heterotheca villosa (Pursh) Shinners var. minor (Hook.) Semple | hairy false goldenaster | Asteraceae
|
| HEVIN | Heterotheca villosa (Pursh) Shinners var. nana (Gray) Semple | hairy false goldenaster | Asteraceae
|
| HEVIP | Heterotheca villosa (Pursh) Shinners var. pedunculata (Greene) Harms ex Semple | hairy false goldenaster | Asteraceae
|
| HEVIS | Heterotheca villosa (Pursh) Shinners var. scabra (Eastw.) Semple | hairy false goldenaster | Asteraceae
|
| HEVIS2 | Heterotheca villosa (Pursh) Shinners var. shevockii Semple | Heterotheca shevockii | Asteraceae
|
| HEVIS3 | Heterotheca villosa (Pursh) Shinners var. sierrablancensis Semple | hairy false goldenaster | Asteraceae
|
| HEVIV | Heterotheca villosa (Pursh) Shinners var. villosa | hairy false goldenaster | Asteraceae
|
| HEVI4 | Heterotheca villosa (Pursh) Shinners | hairy false goldenaster | Asteraceae
|
| HEVI5 | Heterotheca viscida (Gray) Harms | cliff false goldenaster | Asteraceae
|
| HEWI | Heterotheca wisconsinensis (Shinners) Shinners | Heterotheca villosa var. minor | Asteraceae
|
| HEZI | Heterotheca zionensis Semple | Zion false goldenaster | Asteraceae
|
| HETER8 | Heterotheca Cass. | false goldenaster | Asteraceae
|
| HEAN6 | Heterotrichum angustifolium DC. | Clidemia angustilamia | Melastomataceae
|
| HECY | Heterotrichum cymosum (Wendl. ex Spreng.) Urban | camasey terciopelo | Melastomataceae
|
| HETER9 | Heterotrichum DC. | heterotrichum | Melastomataceae
|
| HEAB | Heuchera abramsii Rydb. | San Gabriel alumroot | Saxifragaceae
|
| HEAC6 | Heuchera aceroides Rydb. | Heuchera longiflora | Saxifragaceae
|
| HEAL8 | Heuchera alba Rydb. | white alumroot | Saxifragaceae
|
| HEAL4 | Heuchera alpestris Rosendahl, Butters & Lakela | San Bernardino Mountain alumroot | Saxifragaceae
|
| HEAMA2 | Heuchera americana L. var. americana | American alumroot | Saxifragaceae
|
| HEAMB | Heuchera americana L. var. brevipetala Rosendahl, Butters & Lakela | Heuchera americana var. americana | Saxifragaceae
|
| HEAMC | Heuchera americana L. var. calycosa (Small) Rosendahl, Butters & Lakela | Heuchera americana var. americana | Saxifragaceae
|
| HEAMC2 | Heuchera americana L. var. caroliniana Rosendahl, Butters & Lakela | Heuchera caroliniana | Saxifragaceae
|
| HEAMH3 | Heuchera americana L. var. heteradenia Fern. | Heuchera americana var. americana | Saxifragaceae
|
| HEAMH | Heuchera americana L. var. hirsuticaulis (Wheelock) Rosendahl, Butters & Lakela | American alumroot | Saxifragaceae
|
| HEAMH2 | Heuchera americana L. var. hispida (Pursh) E. Wells | American alumroot | Saxifragaceae
|
| HEAMI | Heuchera americana L. var. interior Rosendahl, Butters & Lakela | Heuchera americana var. hirsuticaulis | Saxifragaceae
|
| HEAMS | Heuchera americana L. var. subtruncata Fern. | Heuchera americana var. americana | Saxifragaceae
|
| HEAM6 | Heuchera americana L. | American alumroot | Saxifragaceae
|
| HEAR12 | Heuchera arkansana Rydb. | Heuchera villosa var. arkansana | Saxifragaceae
|
| HEBR2 | Heuchera bracteata (Torr.) Ser. | bracted alumroot | Saxifragaceae
|
| HEBR3 | Heuchera brevistaminea Wiggins | Laguna Mountain alumroot | Saxifragaceae
|
| HECA36 | Heuchera caespitosa Eastw. | tufted alumroot | Saxifragaceae
|
| HECA22 | Heuchera calycosa Small | Heuchera americana var. americana | Saxifragaceae
|
| HECA23 | Heuchera caroliniana (Rosendahl, Butters & Lakela) E. Wells | Carolina alumroot | Saxifragaceae
|
| HECE2 | Heuchera cespitosa Eastw. [orthographic variant] | Heuchera caespitosa | Saxifragaceae
|
| HECH | Heuchera chlorantha Piper | tall alumroot | Saxifragaceae
|
| HECR8 | Heuchera crinita Rydb. | Heuchera villosa var. villosa | Saxifragaceae
|
| HECU8 | Heuchera �cuneata T.J. Howell (pro sp.) | | Saxifragaceae
|
| HECUC | Heuchera curtisii Torr. & Gray ex Gray var. crenata Rydb. | Heuchera americana var. americana | Saxifragaceae
|
| HECU4 | Heuchera curtisii Torr. & Gray ex Gray | Heuchera americana var. americana | Saxifragaceae
|
| HECU5 | Heuchera cusickii Rosendahl, Butters & Lakela | Heuchera grossulariifolia var. grossulariifolia | Saxifragaceae
|
| HECYA | Heuchera cylindrica Dougl. ex Hook. var. alpina Sw. | alpine alumroot | Saxifragaceae
|