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Taxon:  Helianthus debilis Nutt. subsp. tardiflorus Heiser



Summary
Genus:
Helianthus
Family:
Asteraceae (alt. Compositae)
Subfamily:
Asteroideae
Tribe:
Heliantheae
Nomen number:
104291
Place of publication:
Madroño 13:156. 1956
Verified:
03/08/2010 ARS Systematic Botanists.
Accessions:
2 (2  active, 0  available) in National Plant Germplasm System.  (Map it)
Other conspecific taxa
Helianthus debilis Nutt. (3 active accession[s])
Helianthus debilis Nutt. subsp. cucumerifolius (Torr. & A. Gray) Heiser (1 active accession[s])
Helianthus debilis Nutt. subsp. debilis (1 active accession[s])
Helianthus debilis Nutt. subsp. silvestris Heiser (4 active accession[s])
Helianthus debilis Nutt. subsp. vestitus (E. Watson) Heiser (2 active accession[s])
Autonyms (not in current use), synonyms and invalid designations
No images


Reference(s)
  1. FNA Editorial Committee. Flora of North America. 1993-
  2. Heiser, C. B., Jr. et al. 1969. The North American sunflowers (Helianthus). Mem. Torrey Bot. Club 22(3):48.
  3. Radford, A. E. et al., eds. Vascular flora of the southeastern United States. 1980-
  4. Rogers, C. E. et al. 1982. Sunflower species of the United States. 8.
  5. 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.
  6. 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.
  7. Sossey-Alaoui, K. et al. 1998. Evidence for several genomes in Helianthus. Theor. Appl. Genet. 97:422-430.
  8. Sossey-Alaoui, K. et al. 1998. Evidence for several genomes in Helianthus. Theor. Appl. Genet. 97:422-430.
  9. 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.
  10. 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.
Common names
English
slow-flowering sunflower –
Distribution
order_codeStatusContinentSubcontinentCountryStateNote
1NativeNorthern AmericaSoutheastern U.S.A.United StatesAlabama 
1NativeNorthern AmericaSoutheastern U.S.A.United StatesFlorida 
1NativeNorthern AmericaSoutheastern U.S.A.United StatesGeorgia 
1NativeNorthern AmericaSoutheastern U.S.A.United StatesMississippi 
Native
Northern America
  • SOUTHEASTERN U.S.A.: United States [Alabama, Florida, Georgia, Mississippi]
Cite as: USDA, Agricultural Research Service, National Plant Germplasm System. 2025. Germplasm Resources Information Network (GRIN Taxonomy). National Germplasm Resources Laboratory, Beltsville, Maryland.
URL: https://ausgenebank.agriculture.vic.gov.au/gringlobal/taxon/taxonomydetail?id=104291. Accessed 8 December 2025.

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