| Helianthus agrestis Pollard |
Accepted |
17 |
| Helianthus angustifolius L. |
Accepted |
17 |
| Helianthus annuus L. |
Accepted |
17 |
| Helianthus anomalus S. F. Blake |
Accepted |
17 |
| Helianthus argophyllus (D. C. Eaton) Torr. & A. Gray |
Accepted |
17 |
| Helianthus arizonensis R. C. Jacks. |
Accepted |
17 |
| Helianthus atrorubens L. |
Accepted |
17 |
| Helianthus bolanderi A. Gray |
Accepted |
17 |
| Helianthus californicus DC. |
Accepted |
17 |
| Helianthus carnosus Small |
Accepted |
17 |
| Helianthus ciliaris DC. |
Accepted |
34 |
| Helianthus cinereus Torr. & A. Gray |
Accepted |
None |
| Helianthus cusickii A. Gray |
Accepted |
17 |
| Helianthus debilis Nutt. |
Accepted |
17 |
| Helianthus debilis subsp. cucumerifolius (Torr. & A. Gray) Heiser |
Accepted |
17 |
| Helianthus debilis subsp. tardiflorus Heiser |
Accepted |
17 |
| Helianthus debilis subsp. vestitus (E. Watson) Heiser |
Accepted |
17 |
| Helianthus decapetalus L. |
Accepted |
34 |
| Helianthus deserticola Heiser |
Accepted |
17 |
| Helianthus dissectifolius R. C. Jacks. |
Accepted |
17 |
| Helianthus divaricatus L. |
Accepted |
17 |
| Helianthus doronicoides Lam. |
Accepted |
17 |
| Helianthus exilis A. Gray |
Accepted |
17 |
| Helianthus floridanus A. Gray ex Chapm. |
Accepted |
17 |
| Helianthus giganteus L. |
Accepted |
17 |
| Helianthus glaucophyllus D. M. Sm. |
Accepted |
17 |
| Helianthus gracilentus A. Gray |
Accepted |
17 |
| Helianthus grosseserratus M. Martens |
Accepted |
17 |
| Helianthus heterophyllus Nutt. |
Accepted |
17 |
| Helianthus hirsutus Raf. |
Accepted |
34 |
| Helianthus laciniatus A. Gray |
Accepted |
17 |
| Helianthus laevigatus Torr. & A. Gray |
Accepted |
34 |
| Helianthus lenticularis Douglas ex Lindl. |
Accepted |
17 |
| Helianthus longifolius Pursh |
Accepted |
17 |
| Helianthus maximiliani Schrad. |
Accepted |
17 |
| Helianthus mollis Lam. |
Accepted |
17 |
| Helianthus multiflorus L. |
Accepted |
17 |
| Helianthus neglectus Heiser |
Accepted |
17 |
| Helianthus niveus (Benth.) Brandegee |
Accepted |
17 |
| Helianthus niveus subsp. tephrodes (A. Gray) Heiser |
Accepted |
17 |
| Helianthus nuttallii Torr. & A. Gray |
Accepted |
17 |
| Helianthus nuttallii subsp. rydbergii (Britton) R. W. Long |
Accepted |
17 |
| Helianthus occidentalis Riddell |
Accepted |
17 |
| Helianthus occidentalis subsp. plantagineus (Torr. & A. Gray) Shinners |
Accepted |
17 |
| Helianthus paradoxus Heiser |
Accepted |
17 |
| Helianthus pauciflorus Nutt. |
Accepted |
51 |
| Helianthus petiolaris Nutt. |
Accepted |
17 |
| Helianthus petiolaris var. canescens A. Gray |
Accepted |
17 |
| Helianthus porteri (A. Gray) Pruski |
Accepted |
17 |
| Helianthus praecox Engelm. & A. Gray |
Accepted |
17 |
| Helianthus praecox subsp. hirtus (Heiser) Heiser |
Accepted |
17 |
| Helianthus praecox subsp. runyonii (Heiser) Heiser |
Accepted |
17 |
| Helianthus pumilus Nutt. |
Accepted |
17 |
| Helianthus radula (Pursh) Torr. & A. Gray |
Accepted |
17 |
| Helianthus resinosus Small |
Accepted |
51 |
| Helianthus salicifolius A. Dietr. |
Accepted |
17 |
| Helianthus scaberrimus Elliott |
Accepted |
17 |
| Helianthus schweinitzii Torr. & A. Gray |
Accepted |
34 |
| Helianthus silphioides Nutt. |
Accepted |
17 |
| Helianthus simulans E. Watson |
Accepted |
17 |
| Helianthus smithii Heiser |
Accepted |
34 |
| Helianthus tuberosus L. |
Accepted |
51 |
| Helianthus à glaucus (Small) D. M. Sm. & Guard |
Accepted |
17 |
| Helianthus à kellermani (Britton) R. W. Long |
Accepted |
17 |
| Helianthus × laetiflorus Pers. |
Accepted |
51 |
| Helianthus angustifolius (L.) Michx. ex DC. |
Unresolved |
17 |
| Helianthus arenicola E. Watson |
Unresolved |
34 |
| Helianthus atrorubens Lam. |
Unresolved |
17 |
| Helianthus atrorubens Michx. |
Unresolved |
17 |
| Helianthus chartaceus E. Watson |
Unresolved |
34 |
| Helianthus decapetalus Darl. |
Unresolved |
17 |
| Helianthus divaricatus Michx. |
Unresolved |
17 |
| Helianthus doronicoides Torr. & A. Gray |
Unresolved |
17 |
| Helianthus formosus E. Watson |
Unresolved |
51 |
| Helianthus giganteus Cav. |
Unresolved |
17 |
| Helianthus giganteus Lour. |
Unresolved |
17 |
| Helianthus grosse-serratus Pohl ex Baker |
Unresolved |
16 |
| Helianthus impapurensis Hieron. |
Unresolved |
17 |
| Helianthus inexpectatus D. J. Keil & Elvin |
Unresolved |
34 |
| Helianthus leoninus E. Watson |
Unresolved |
34 |
| Helianthus longifolius Hook. |
Unresolved |
17 |
| Helianthus macrophyllus Willd. |
Unresolved |
51 |
| Helianthus micranthus Spreng. |
Unresolved |
17 |
| Helianthus mollis Buc'hoz |
Unresolved |
17 |
| Helianthus mollis Willd. |
Unresolved |
17 |
| Helianthus neglectus Otto ex A. Gray |
Unresolved |
17 |
| Helianthus ruderalis Ventsl. |
Unresolved |
17 |
| Helianthus strumosus Willd. |
Unresolved |
51 |
| Helianthus tomentosus Elliott |
Unresolved |
51 |
| Helianthus tuberosus Parry |
Unresolved |
51 |
| Helianthus verticillatus Small |
Unresolved |
17 |
| Helianthus virilis E. Watson |
Unresolved |
34 |
| Helianthus annuus subsp. annuus |
Synonym of Helianthus annuus L. |
17 |
| Helianthus annuus subsp. lenticularis (Douglas) Cockerell |
Synonym of Helianthus annuus L. |
17 |
| Helianthus annuus var. annuus |
Synonym of Helianthus annuus L. |
17 |
| Helianthus annuus var. macrocarpus (DC.) Cockerell |
Synonym of Helianthus annuus L. |
17 |
| Helianthus jaegeri Heiser |
Synonym of Helianthus annuus L. |
17 |
| Helianthus macrocarpus DC. |
Synonym of Helianthus annuus L. |
17 |
| Helianthus arenicola None |
Synonym of Helianthus arenicola E. Watson |
34 |
| Helianthus argophyllus Torr. & A. Gray |
Synonym of Helianthus argophyllus (D. C. Eaton) Torr. & A. Gray |
17 |
| Helianthus californicus None |
Synonym of Helianthus californicus DC. |
17 |
| Helianthus californicus var. californicus |
Synonym of Helianthus californicus DC. |
17 |
| Helianthus carnosus None |
Synonym of Helianthus carnosus Small |
17 |
| Helianthus ciliaris None |
Synonym of Helianthus ciliaris DC. |
34 |
| Helianthus debilis subsp. debilis |
Synonym of Helianthus debilis Nutt. |
17 |
| Helianthus debilis subsp. debilis |
Synonym of Helianthus debilis Nutt. |
17 |
| Helianthus debilis var. debilis |
Synonym of Helianthus debilis Nutt. |
17 |
| Helianthus cucumerifolius Torr. & A. Gray |
Synonym of Helianthus debilis subsp. cucumerifolius (Torr. & A. Gray) Heiser |
17 |
| Helianthus debilis subsp. cucumerifolius Torr. & A. Gray |
Synonym of Helianthus debilis subsp. cucumerifolius (Torr. & A. Gray) Heiser |
17 |
| Helianthus debilis var. cucumerifolius (Torr. & A. Gray) A. Gray |
Synonym of Helianthus debilis subsp. cucumerifolius (Torr. & A. Gray) Heiser |
17 |
| Helianthus dissectifolius subsp. dissectifolius |
Synonym of Helianthus dissectifolius R. C. Jacks. |
17 |
| Helianthus grosseserratus M. M. H. K. Britt. |
Synonym of Helianthus grosseserratus M. Martens |
17 |
| Helianthus grosseserratus M. M. H. S. A. Dietr. |
Synonym of Helianthus grosseserratus M. Martens |
17 |
| Helianthus grosseserratus None |
Synonym of Helianthus grosseserratus M. Martens |
17 |
| Helianthus eggertii Small |
Synonym of Helianthus hirsutus Raf. |
34 |
| Helianthus montanus E. Watson |
Synonym of Helianthus hirsutus Raf. |
34 |
| Helianthus strumosus L. |
Synonym of Helianthus hirsutus Raf. |
34 |
| Helianthus trachelifolius Mill. |
Synonym of Helianthus hirsutus Raf. |
34 |
| Helianthus crenatus R. C. Jacks. |
Synonym of Helianthus laciniatus A. Gray |
17 |
| Helianthus crenatus R. C. Jacks. |
Synonym of Helianthus laciniatus A. Gray |
17 |
| Helianthus laciniatus A. G. H. A. L. |
Synonym of Helianthus laciniatus A. Gray |
17 |
| Helianthus laciniatus subsp. laciniatus |
Synonym of Helianthus laciniatus A. Gray |
17 |
| Helianthus dalyi Britton |
Synonym of Helianthus maximiliani Schrad. |
17 |
| Helianthus maximiliani |
Synonym of Helianthus maximiliani Schrad. |
17 |
| Helianthus niveus subsp. niveus |
Synonym of Helianthus niveus (Benth.) Brandegee |
17 |
| Helianthus nuttallii subsp. nuttallii |
Synonym of Helianthus nuttallii Torr. & A. Gray |
17 |
| Helianthus dowellianus M. A. Curtis |
Synonym of Helianthus occidentalis Riddell |
17 |
| Helianthus oleifer Plaschek |
Synonym of Helianthus oleifer Wall. |
17 |
| Helianthus rigidus (Cass.) Desf. |
Synonym of Helianthus pauciflorus Nutt. |
51 |
| Helianthus rigidus subsp. rigidus |
Synonym of Helianthus pauciflorus Nutt. |
51 |
| Helianthus rigidus subsp. subrhomboideus (Rydb.) Heiser |
Synonym of Helianthus pauciflorus subsp. subrhomboideus (Rydb.) O. Spring & E. E. Schill. |
51 |
| Helianthus subrhomboideus Rydb. |
Synonym of Helianthus pauciflorus subsp. subrhomboideus (Rydb.) O. Spring & E. E. Schill. |
51 |
| Helianthus petiolaris subsp. petiolaris |
Synonym of Helianthus petiolaris Nutt. |
17 |
| Helianthus canus (Britton) Wooton & Standl. |
Synonym of Helianthus petiolaris var. canescens A. Gray |
17 |
| Helianthus niveus subsp. canescens (A. Gray) Heiser |
Synonym of Helianthus petiolaris var. canescens A. Gray |
17 |
| Helianthus petiolaris subsp. fallax Heiser |
Synonym of Helianthus petiolaris var. fallax (Heiser) B. L. Turner |
17 |
| Viguiera porteri (A. Gray) S. F. Blake |
Synonym of Helianthus porteri (A. Gray) Pruski |
17 |
| Helianthus praecox subsp. praecox |
Synonym of Helianthus praecox Engelm. & A. Gray |
17 |
| Helianthus debilis subsp. hirtus Heiser |
Synonym of Helianthus praecox subsp. hirtus (Heiser) Heiser |
17 |
| Helianthus orgyalis DC. |
Synonym of Helianthus salicifolius A. Dietr. |
17 |
| Helianthus schweinitzii T. &. A. G. [. A. P. O. F. A. D. S. L. H. G. O. H. microcephalu] |
Synonym of Helianthus schweinitzii Torr. & A. Gray |
34 |
| Helianthus schweinitzii T. &. A. G. [. A. P. O. F. A. D. S. L. H. giganteus] |
Synonym of Helianthus schweinitzii Torr. & A. Gray |
34 |
| Helianthus schweinitzii T. &. A. Gray |
Synonym of Helianthus schweinitzii Torr. & A. Gray |
34 |
| Helianthus schweinitzii Torr. & A. G. [. H. O. B. H. G. (. =. 17) & H. M. (. =. 17)] |
Synonym of Helianthus schweinitzii Torr. & A. Gray |
34 |
| Helianthus silphioides None |
Synonym of Helianthus silphioides Nutt. |
17 |
| Helianthus tomentosus Michx. |
Synonym of Helianthus tuberosus L. |
51 |
| Helianthus tuberosus var. subcanescens A. Gray |
Synonym of Helianthus tuberosus L. |
51 |
| Helianthus à laetiflorus None |
Synonym of Helianthus à laetiflorus Pers. |
51 |
| Helianthus × kellermani B. (. H. G. M. H. S. A. D. ) |
Synonym of Helianthus × kellermani (Britton) R. W. Long |
17 |
| Helianthus × kellermani Britt. |
Synonym of Helianthus × kellermani (Britton) R. W. Long |
17 |
| Helianthus × laetiflorus |
Synonym of Helianthus × laetiflorus Pers. |
51 |
| Helianthus hypargyreus S. F. Blake |
Synonym of Pappobolus hypargyreus (S. F. Blake) Panero |
17 |
| Helianthus hypargyreus S. F. Blake |
Synonym of Pappobolus hypargyreus (S. F. Blake) Panero |
17 |
| Helianthus imbaburensis Hieron. |
Synonym of Pappobolus imbaburensis (Hieron.) Panero |
17 |
| Helianthus imbaburensis Hieron. |
Synonym of Pappobolus imbaburensis (Hieron.) Panero |
17 |
| Helianthus microcephalus Torr. & A. Gray |
Synonym of Pappobolus microphyllus (Kunth) Panero |
17 |
| Helianthus subniveus S. F. Blake |
Synonym of Pappobolus subniveus (S. F. Blake) Panero |
17 |
| Helianthus parviflorus Kunth |
Synonym of Verbesina parviflora S. F. Blake |
17 |
| Helianthus angustifolius Spreng. ex Baker |
Synonym of Viguiera anchusifolia (DC.) Baker |
17 |
| Helianthus dentatus Cav. |
Synonym of Viguiera dentata (Cav.) Spreng. |
17 |
| Helianthus ludens Shinners |
Synonym of Viguiera phenax S. F. Blake |
17 |