Helianthus longifolius merupakan tumbuhan dari famili Asteraceae (suku aster-asteran). Nama ilmiah Helianthus longifolius pertama kali dipublikasikan oleh botanis William Jackson Hooker pada tahun 1833.
POWO (2024). "Plants of the World Online. Facilitated by the Royal Botanic Gardens, Kew. Published on the Internet; https://powo.science.kew.org/."
IPNI (2024). "International Plant Names Index. Published on the Internet http://www.ipni.org, The Royal Botanic Gardens, Kew, Harvard University Herbaria & Libraries, and Australian National Herbarium"
USDA - NRCS (2024). "United States Department of Agriculture - Natural Resources Conservation Service", Plant Profile.
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