Taxon:  Helianthus occidentalis Riddell



Summary
Genus:
Helianthus
Family:
Asteraceae (alt. Compositae)
Subfamily:
Asteroideae
Tribe:
Heliantheae
Nomen number:
27936
Place of publication:
W. J. Med. Phys. Sci. 9: 577.  1836 (Suppl. cat. Ohio plants 13.  1836)
Verified:
11/05/2010 ARS Systematic Botanists.
Accessions:
9 (7  active, 6  available) in National Plant Germplasm System.  (Map it)
Other conspecific taxa
Helianthus occidentalis Riddell subsp. occidentalis (2 active accession[s])
Helianthus occidentalis Riddell subsp. plantagineus (Torr. & A. Gray) Heiser (12 active accession[s])
Autonyms (not in current use), synonyms and invalid designations
Images (1 total. Click on image for more.)
Fruits

Conservation Status

Reference(s)
  1. Browne, E. T. & R. Athey. 1992. Vascular plants of Kentucky: an annotated checklist
  2. Chester, E. W. et al. 1993-1997. Atlas of Tennessee vascular plants.
  3. Correll, D. S. & M. C. Johnston. 1970. Manual of the vascular plants of Texas
  4. Eilers, L. J. & D. M. Roosa. 1994. The vascular plants of Iowa
  5. Erhardt, W. et al. 2008. Der große Zander: Enzyklopädie der Pflanzennamen 1456.
  6. FNA Editorial Committee. 1993-. Flora of North America.
  7. Gleason, H. A. & A. Cronquist. 1991. Manual of vascular plants of northeastern United States and adjacent Canada, ed. 2
  8. Heiser, C. B., Jr. et al. 1962. Species crosses in Helianthus: I. Diploid species. Brittonia 14:137-147. Note: this study cited "complete incompatibility" between Helianthus occidentalis and H. annuus
  9. Heiser, C. B., Jr. et al. 1969. The North American sunflowers (Helianthus). Mem. Torrey Bot. Club 22(3):104-107.
  10. Ohio Flora Committee (E. L. Braun, T. S. Cooperrider, T. R. Fisher, J. J. Furlow). 1967-. The vascular flora of Ohio.
  11. Ownbey, G. B. & T. Morley. 1991. Vascular plants of Minnesota: a checklist and atlas
  12. Radford, A. E. et al., eds. 1980-. Vascular flora of the southeastern United States.
  13. Radford, A. E. et al. 1964. Manual of the vascular flora of the Carolinas.
  14. Rogers, C. E. et al. 1982. Sunflower species of the United States 39.
  15. Schilling, E. E. et al. 1998. Phylogenetic relationships in Helianthus (Asteraceae) based on nuclear ribosomal DNA internal transcribed spacer region sequence data. Syst. Bot. 23:177-187. www.aspt.net/systematic-botany
  16. Scoggan, H. J. 1978-1979. The flora of Canada, 4 vol. Note: mentions
  17. Smith, E. B. 1994. Keys to the flora of Arkansas.
  18. Strausbaugh, T. D. & E. L. Core. 1978. Flora of West Virginia, ed. 2.
  19. Tikhomirov, V. T. & P. V. Chiryaev. 2005. Sources of resistance to diseases in original material of sunflower. Helia 42:101-106.
  20. Timme, R. E. et al. 2007. High-resolution phylogeny for Helianthus (Asteraceae) using the 18S-26S ribosomal DNA external transcribed spacer. Amer. J. Bot. 94:1837-1852.
  21. Voss, E. 1972-. Michigan flora.
  22. Wherry, E. T. et al. 1979. Atlas of the flora of Pennsylvania.
  23. Wofford, B. E. Database of Tennessee vascular plants (on-line resource).
Common names
LanguageNameAlternate namenoteseqCitation
Englishwestern sunflower  1Rogers, C. E. et al. 1982. Sunflower species of the United States 39.
Germanwenigblättrige Sonnenblume  2Erhardt, W. et al. 2008. Der große Zander: Enzyklopädie der Pflanzennamen 1456.
Distribution
order_codeStatusContinentSubcontinentCountryStateNoteReference
1NativeNorthern AmericaNorth-Central U.S.A.United StatesIllinois Heiser, C. B., Jr. et al. 1969. The North American sunflowers (Helianthus). Mem. Torrey Bot. Club 22(3):104-107.
1NativeNorthern AmericaNorth-Central U.S.A.United StatesIowae.Heiser, C. B., Jr. et al. 1969. The North American sunflowers (Helianthus). Mem. Torrey Bot. Club 22(3):104-107.
1NativeNorthern AmericaNorth-Central U.S.A.United StatesKansase.?FNA Editorial Committee. 1993-. Flora of North America.
1NativeNorthern AmericaNorth-Central U.S.A.United StatesMinnesotas.e.Heiser, C. B., Jr. et al. 1969. The North American sunflowers (Helianthus). Mem. Torrey Bot. Club 22(3):104-107.
1NativeNorthern AmericaNorth-Central U.S.A.United StatesMissouri Heiser, C. B., Jr. et al. 1969. The North American sunflowers (Helianthus). Mem. Torrey Bot. Club 22(3):104-107.
1NativeNorthern AmericaNorth-Central U.S.A.United StatesWisconsin Heiser, C. B., Jr. et al. 1969. The North American sunflowers (Helianthus). Mem. Torrey Bot. Club 22(3):104-107.
1NativeNorthern AmericaNortheastern U.S.A.United StatesIndiana Heiser, C. B., Jr. et al. 1969. The North American sunflowers (Helianthus). Mem. Torrey Bot. Club 22(3):104-107.
1NativeNorthern AmericaNortheastern U.S.A.United StatesMichigan Heiser, C. B., Jr. et al. 1969. The North American sunflowers (Helianthus). Mem. Torrey Bot. Club 22(3):104-107.
1NativeNorthern AmericaNortheastern U.S.A.United StatesNew Jersey Heiser, C. B., Jr. et al. 1969. The North American sunflowers (Helianthus). Mem. Torrey Bot. Club 22(3):104-107.
1NativeNorthern AmericaNortheastern U.S.A.United StatesOhio Heiser, C. B., Jr. et al. 1969. The North American sunflowers (Helianthus). Mem. Torrey Bot. Club 22(3):104-107.
1NativeNorthern AmericaNortheastern U.S.A.United StatesPennsylvanian.w.Heiser, C. B., Jr. et al. 1969. The North American sunflowers (Helianthus). Mem. Torrey Bot. Club 22(3):104-107.
1NativeNorthern AmericaNortheastern U.S.A.United StatesWest Virginia Heiser, C. B., Jr. et al. 1969. The North American sunflowers (Helianthus). Mem. Torrey Bot. Club 22(3):104-107.
1NativeNorthern AmericaSouth-Central U.S.A.United StatesTexas Heiser, C. B., Jr. et al. 1969. The North American sunflowers (Helianthus). Mem. Torrey Bot. Club 22(3):104-107.
1NativeNorthern AmericaSoutheastern U.S.A.United StatesArkansas Heiser, C. B., Jr. et al. 1969. The North American sunflowers (Helianthus). Mem. Torrey Bot. Club 22(3):104-107.
1NativeNorthern AmericaSoutheastern U.S.A.United StatesDistrict of Columbia FNA Editorial Committee. 1993-. Flora of North America.
1NativeNorthern AmericaSoutheastern U.S.A.United StatesFloridan.e.Heiser, C. B., Jr. et al. 1969. The North American sunflowers (Helianthus). Mem. Torrey Bot. Club 22(3):104-107.
1NativeNorthern AmericaSoutheastern U.S.A.United StatesGeorgia Heiser, C. B., Jr. et al. 1969. The North American sunflowers (Helianthus). Mem. Torrey Bot. Club 22(3):104-107.
1NativeNorthern AmericaSoutheastern U.S.A.United StatesKentucky Heiser, C. B., Jr. et al. 1969. The North American sunflowers (Helianthus). Mem. Torrey Bot. Club 22(3):104-107.
1NativeNorthern AmericaSoutheastern U.S.A.United StatesLouisiana Heiser, C. B., Jr. et al. 1969. The North American sunflowers (Helianthus). Mem. Torrey Bot. Club 22(3):104-107.
1NativeNorthern AmericaSoutheastern U.S.A.United StatesMaryland Heiser, C. B., Jr. et al. 1969. The North American sunflowers (Helianthus). Mem. Torrey Bot. Club 22(3):104-107.
1NativeNorthern AmericaSoutheastern U.S.A.United StatesNorth Carolinaw.Heiser, C. B., Jr. et al. 1969. The North American sunflowers (Helianthus). Mem. Torrey Bot. Club 22(3):104-107.
1NativeNorthern AmericaSoutheastern U.S.A.United StatesTennessee Heiser, C. B., Jr. et al. 1969. The North American sunflowers (Helianthus). Mem. Torrey Bot. Club 22(3):104-107.
1NativeNorthern AmericaSoutheastern U.S.A.United StatesVirginia Heiser, C. B., Jr. et al. 1969. The North American sunflowers (Helianthus). Mem. Torrey Bot. Club 22(3):104-107.
Native
Northern America
  • NORTHEASTERN U.S.A.: United States [Indiana, Michigan, New Jersey, Ohio, Pennsylvania (n.w.), West Virginia]
  • NORTH-CENTRAL U.S.A.: United States [Illinois, Iowa (e.), Kansas (e.?), Minnesota (s.e.), Missouri, Wisconsin]
  • SOUTHEASTERN U.S.A.: United States [Arkansas, District of Columbia, Florida (n.e.), Georgia, Kentucky, Louisiana, Maryland, North Carolina (w.), Tennessee, Virginia]
  • SOUTH-CENTRAL U.S.A.: United States [Texas]

Reference(s)
  1. FNA Editorial Committee. 1993-. Flora of North America.
  2. Heiser, C. B., Jr. et al. 1969. The North American sunflowers (Helianthus). Mem. Torrey Bot. Club 22(3):104-107.
Cite as: USDA, Agricultural Research Service, National Plant Germplasm System. 2026. Germplasm Resources Information Network (GRIN Taxonomy). National Germplasm Resources Laboratory, Beltsville, Maryland.
URL: https://npgstest.ars-grin.gov/gringlobal/taxon/taxonomydetail?id=27936. Accessed 14 April 2026.