Vascular Plants of North Carolina
Account for Longleaf Sunflower - Helianthus longifolius   Pursh
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Section 6 » Order Asterales » Family Asteraceae
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AuthorPursh
DistributionThere is a single specimen reported by RAB (1968), Cronquist (1980), FNA (2006), and Weakley (2018). However, it is apparently in an herbarium not linked to the SERNEC Data Port. The only specimen at SERNEC (Harnett County) is misidentified and actually is H. angustifolius.

Native of GA and AL. Planted in NC and locally escaped.
AbundanceVery rare, if still found as an escape in NC.
HabitatNo NC data.
PhenologyFlowering and fruiting August-October.
IdentificationLongleaf Sunflower grows 2-3 feet tall. The stems and leaves are glabrous, the leaves shiny above. The linear leaves are basal and on the lower half of the stem, as in H. atrorubens, but that plant has pubescent stems and pubescent and scabrous leaves that are much wider.
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State RankSE
Global RankG3
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