Sometimes taxonomists create new names for groups that already have a name. They may do this because they are unaware of the original name, or they may think the organism before them belongs to a different group when in fact it does not. If two or more names are found to apply to the same group, they are considered synonyms. In most cases, the first name takes priority and is considered to be the valid or accepted name. However, there can be exceptions, and it's not always easy to determine which of a series of synonyms should be considered valid or accepted. Here we list the synonyms provided to EOL by our classification partners. We also include other versions of the name that most likely refer to the same group, for example, misspellings in the literature or different variations of the authorship associated with the name.

Preferred marks the preferred name from each source.

NCBI Taxonomy

Name Relationship
Helianthus Preferred
Helianthus L. Synonym

IRMNG

Name Relationship
Helianthus Linnaeus, 1753 Preferred
Helianthus rigidus (Cass.) Desf.
Helianthus validus E. E. Wats.
Helianthus alienus E. E. Wats.
Helianthus fascicularis Greene
Helianthus laevis Linnaeus
Helianthus ludens Shinners
Helianthus quinquenervis Hook.
Helianthus reindutus (Steele) E. E. Wats.
Helianthus rydbergii Britt.
Helianthus subrhomboideus Rydb.
Helianthus tomentosus Michx.
Helianthus dowellianus M. A. Curtis
Helianthus vestitus E. E. Wats.
Helianthus deserticola Heiser
Helianthus aridus Rydb.
Helianthus stenophyllus (Torr. & Gray) E. E. Wats.
Helianthus lenticularis Dougl. ex Lindl.
Helianthus tomentosus auct. non Michx.
Helianthus canus (Britt.) Woot. & Standl.
Helianthus heiseri R. C. Jackson
Helianthus pilosus Tausch
Helianthus tephrodes Gray
Helianthus dalyi Britt.
Helianthus saxicola Small
Helianthus instabilis E. E. Wats.
Helianthus parishii Gray
Helianthus subtuberosus (Britt.) Britt.
Helianthus crenatus R. C. Jackson
Helianthus montanus E. E. Wats.
Helianthus orgyalis DC.
Helianthus scrophulariifolius Britt.
Helianthus cucumerifolius Torr. & Gray
Helianthus canescens (Gray) S. Wats.
Helianthus exilis Gray
Helianthus dentatus Cav.
Helianthus uniflorus Nutt.
Helianthus borealis E. E. Wats.
Helianthus tracheliifolius P. Mill.
Helianthus aristatus Ell.
Helianthus scaberrimus Ell.
Helianthus filiformis Small

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