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Helianthus resinosus

Small

Resin-dot Sunflower

G4Apparently Secure Found in 4 roadless areas NatureServe Explorer →
G4Apparently SecureGlobal Rank
Least concernIUCN
UnknownThreat Impact
Identity
Unique IDELEMENT_GLOBAL.2.140739
Element CodePDAST4N190
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
IUCNLeast concern
Endemicendemic to a single nation
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderAsterales
FamilyAsteraceae
GenusHelianthus
Concept Reference
Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.
Conservation Status
Rank Method Rank calculation - Biotics v2
Review Date2025-11-24
Change Date2025-11-24
Edition Date2025-11-24
Edition AuthorsSoteropoulos (2025)
Threat ImpactUnknown
Range Extent200,000-2,500,000 square km (about 80,000-1,000,000 square miles)
Number of Occurrences81 - 300
Rank Reasons
Helianthus resinosus is a wide-ranging perennial herb found in open areas, pine and mixed pine-hardwood woodlands, woodland edges, thickets, and disturbed habitats, such as roadsides and in clear cuts. It is endemic to the southeastern United States from North Carolina south to the Florida panhandle and west to Mississippi. There are over 125 occurrences, which potentially face threats from development, rights-of-way maintenance, forestry management practices, fire suppression, invasive species, and other threats in some places. Little is known about trends, but with a large range extent and large number of occurrences, abundant habitat, and broad habitat preferences, this species is considered apparently secure.
Range Extent Comments
Helianthus resinosus is endemic to the southeastern United States from North Carolina south to the Florida panhandle and west to Mississippi (FNA 2006, Weakley and the Southeastern Flora Team 2025). Range extent was estimated to be over 400,000 square kilometers using herbarium specimens and photo-based observations documented between 1994 and 2025 (GBIF 2025, iNaturalist 2025, RARECAT 2025, SEINet 2025).
Occurrences Comments
By applying a 1 km separation distance to herbarium specimens and photo-based observations documented between 1994 and 2025, it is estimated that there are over 125 occurrences rangewide (GBIF 2025, iNaturalist 2025, RARECAT 2025, SEINet 2025).
Threat Impact Comments
Although threats are not widely documented, this species is potentially threatened by development, rights-of-way maintenance, forestry management practices, fire suppression, invasive species, and other threats in some places.
Ecology & Habitat

Habitat

Helianthus resinosus grows in open areas, pine and mixed pine-hardwood woodlands, woodland edges, thickets, and disturbed habitats, such as roadsides and in clear cuts (FNA 2006, Keener et al. 2025, Weakley and the Southeastern Flora Team 2025).
Terrestrial Habitats
Forest EdgeWoodland - ConiferWoodland - MixedShrubland/chaparral
Other Nations (1)
United StatesN4
ProvinceRankNative
GeorgiaSNRYes
North CarolinaS3Yes
FloridaSNRYes
MississippiS4Yes
AlabamaSNRYes
South CarolinaS3Yes
Threat Assessments
ThreatScopeSeverityTiming
Unknown/undetermined———

—

Plant Characteristics
DurationPERENNIAL
Economic Value (Genus)Yes
Roadless Areas (4)
Alabama (1)
AreaForestAcres
Reed BrakeTalladega National Forest621
Georgia (1)
AreaForestAcres
Tate BranchChattahoochee National Forest1,069
North Carolina (2)
AreaForestAcres
BearwallowPisgah National Forest4,113
Overflow CreekNantahala National Forest3,379
References (8)
  1. Flora of North America Editorial Committee (FNA). 2006c. Flora of North America north of Mexico. Vol. 21. Magnoliophyta: Asteridae, part 8: Asteraceae, part 3. Oxford Univ. Press, New York. xxii + 616 pp.
  2. Global Biodiversity Information Facility (GBIF). 2025. Global Biodiversity Information Facility (GBIF) data portal. Online. Available: https://www.gbif.org/ (accessed 2025).
  3. iNaturalist. 2025. Online. Available: https://www.inaturalist.org (accessed 2025).
  4. Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.
  5. Keener, B.R., A.R. Diamond, T.W. Barger, L.J. Davenport, P.G. Davison, S.L. Ginzbarg, C.J. Hansen, D.D. Spaulding, J.K. Triplett, and M. Woods. 2025. Alabama Plant Atlas. [S.M. Landry and K.N. Campbell (original application development), Florida Center for Community Design and Research. University of South Florida]. University of West Alabama, Livingston, Alabama.
  6. <p>NatureServe's Rapid Analysis of Rarity and Endangerment Conservation Assessment Tool (RARECAT). 2025. Version: 2.1.1 (released April 04, 2025).</p>
  7. Southwest Environmental Information Network (SEINet). 2025. Collections Databases. Online. Available: https://swbiodiversity.org/seinet/collections/index.php (accessed 2025).
  8. Weakley, A.S., and Southeastern Flora Team. 2025. Flora of the southeastern United States Web App. Edition of February 18, 2025. University of North Carolina Herbarium (NCU), North Carolina Botanical Garden, University of North Carolina, Chapel Hill. Online. Available: https://fsus.ncbg.unc.edu (accessed 2025).