Taxon: Helianthus debilis Nutt. subsp. debilis

See other conspecific taxa:

• Helianthus debilis (1 accessions)
• Helianthus debilis subsp. cucumerifolius (11 accessions)
• Helianthus debilis subsp. silvestris (22 accessions)
• Helianthus debilis subsp. tardiflorus (6 accessions)
• Helianthus debilis subsp. vestitus (3 accessions)

Common names:

• beach sunflower   (Source: C. E. Rogers et al.) – English
  

Economic importance:

• Gene sources: disease resistance for sunflower   (based on tests using crosses of H. debilis subsp. debilis with H. annuus, fide Crop Sci 25:664. 1985)
  
• Gene sources: secondary genetic relative of sunflower   (based on crosses of H. debilis subsp. debilis with H. annuus, fide Crop Sci 25:664. 1985)
  

More:

View ethnobotanical data from Moerman's Native American Ethnobotany Database

Distributional range:

• NORTHERN AMERICA (Check conservation status in U.S. & Canada in NatureServe Explorer database)
  Southeastern U.S.A.: United States - Florida [e.]

References:

• FNA Editorial Committee. 1993–. Flora of North America.
• Giordani, T. et al. 2003. Analysis of a dehydrin encoding gene and its phylogenetic utility in Helianthus. Theor. Appl. Genet. 107:316–325.
• Heiser, C. B., Jr. et al. 1969. The North American sunflowers (Helianthus). Mem. Torrey Bot. Club 22:48.
• Jan, C. C. & J. M. Chandler. 1985. Transfer of powdery mildew resistance from Helianthus debilis Nutt. to cultivated sunflower. Crop Sci. (Madison) 25:664–666.
• Radford, A. E. et al., eds. 1980–. Vascular flora of the southeastern United States.
• Rogers, C. E. et al. 1982. Sunflower species of the United States. 8.
• Schilling, E. E. et al. 1998. Phylogenetic relationships in Helianthus (Asteraceae) based on nuclear ribosomal DNA internal transcribed spacer region sequence data. Syst. Bot. 23:177–87.
• Sossey-Alaoui, K. et al. 1998. Evidence for several genomes in Helianthus. Theor. Appl. Genet. 97:422–430.
• 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.
• Vukich, M. et al. 2009. Genetic variability in sunflower (Helianthus annuus l.) and in the Helianthus genus as assessed by retrotransposons-based molecular markers. Theor. Appl. Genet. 119:1027–1038.

Synonyms:

• (≡) Helianthus annuus var. debilis (Nutt.) Anashch.
  (previously associated with 1 accession)

Check other web resources for Helianthus debilis Nutt. subsp. debilis:

• Flora of North America: Collaborative Floristic Effort of North American Botanists
• PLANTS: USDA-NRCS Database of Plants of the United States and its Territories
• TROPICOS: Nomenclatural and Specimen Database of the Missouri Botanical Garden

Images:

• GRIN Images of germplasm accessions.
• Capitulum: USDA/ARS Sunflower Research Unit
• Capitulum and foliage: USDA/ARS Sunflower Research Unit
• Dense population: USDA/ARS Sunflower Research Unit

More:

• Images Note: Be advised that their identity may be inaccurate. Proper identification of a plant may require specialized taxonomic knowledge or comparison with properly documented herbarium material.

Abbreviations & symbols in GRIN Taxonomy

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