Helianthus floridanus - Gray ex Chapman
Florida Sunflower
Other Common Names: Florida sunflower
Taxonomic Status: Accepted
Related ITIS Name(s): Helianthus floridanus A. Gray ex Chapm. (TSN 36640)
Unique Identifier: ELEMENT_GLOBAL.2.138380
Element Code: PDAST4N0K0
Informal Taxonomy: Plants, Vascular - Flowering Plants - Aster Family
 
Kingdom Phylum Class Order Family Genus
Plantae Anthophyta Dicotyledoneae Asterales Asteraceae Helianthus
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Concept Reference
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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.
Concept Reference Code: B94KAR01HQUS
Name Used in Concept Reference: Helianthus floridanus
Conservation Status
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NatureServe Status

Global Status: G3G4
Global Status Last Reviewed: 09Jul1993
Global Status Last Changed: 09Jul1993
Rounded Global Status: G3 - Vulnerable
Reasons: Found in wet woods, bogs and swales in Coastal Plain, North Carolina to Louisiana, excepting Mississippi. Rare in northern part of range, occasional in Florida, and locally common to rare in Louisiana. County data suggests a patchy distribution throughout range. Possible threat to species integrity due to hybridization with Helianthus angustifolius.
Nation: United States
National Status: N3N4

U.S. & Canada State/Province Status
Due to latency between updates made in state, provincial or other NatureServe Network databases and when they appear on NatureServe Explorer, for state or provincial information you may wish to contact the data steward in your jurisdiction to obtain the most current data. Please refer to our Distribution Data Sources to find contact information for your jurisdiction.
United States Alabama (SNR), Florida (SNR), Georgia (S3S4), Louisiana (SU), North Carolina (S1), South Carolina (SNR)

Other Statuses

NatureServe Global Conservation Status Factors

Range Extent Comments: Coastal Plain, North Carolina to Alabama, and Louisiana (Kartesz 1995). South Carolina reports H. floridanus in Beaufort and Clarendon counties; North Carolina (Columbus County (Radford et al. 1968). Louisiana (St. Tammany, Washington, Sabine and Grant Parishes (Gandhi and Thomas 1989).

Number of Occurrences:  
Number of Occurrences Comments: Rare in the Carolinas (Radford et al. 1968). 12 counties reporting in south central and southeast Georgia (Jones and Coile 1988). Occasional in central Florida (Wunderlin 1982). Common in St. Tammany and Washington Parishes, and rare in Sabine and Grant Parishes of Louisiana (Gandhi and Thomas 1989).

Intrinsic Vulnerability Comments: The more agressive Helianthus angustifolius may be in the process of replacing H. floridanus through the process of hybridization in the zone of overlap (Godfrey and Wooten 1981).

Other NatureServe Conservation Status Information

Distribution
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Global Range: Coastal Plain, North Carolina to Alabama, and Louisiana (Kartesz 1995). South Carolina reports H. floridanus in Beaufort and Clarendon counties; North Carolina (Columbus County (Radford et al. 1968). Louisiana (St. Tammany, Washington, Sabine and Grant Parishes (Gandhi and Thomas 1989).

U.S. States and Canadian Provinces

Due to latency between updates made in state, provincial or other NatureServe Network databases and when they appear on NatureServe Explorer, for state or provincial information you may wish to contact the data steward in your jurisdiction to obtain the most current data. Please refer to our Distribution Data Sources to find contact information for your jurisdiction.
Color legend for Distribution Map

U.S. & Canada State/Province Distribution
United States AL, FL, GA, LA, NC, SC

Range Map
No map available.


U.S. Distribution by County Help
State County Name (FIPS Code)
NC Bladen (37017), Brunswick (37019), Columbus (37047), Robeson (37155)
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
03 Lower Cape Fear (03030005)+, Lumber (03040203)+, Waccamaw (03040206)+
+ Natural heritage record(s) exist for this watershed
* Extirpated/possibly extirpated
Ecology & Life History
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Habitat Comments: Moist low ground. Moist pinelands (Wunderlin 1982). Pine savannas and flatwoods, borders of shrub-tree bogs, swales (Godfrey and Wooten 1981).
Economic Attributes
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Economically Important Genus: Y
Management Summary Not yet assessed
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Population/Occurrence Delineation
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Group Name: Flatwoods-Helianthus spp.-SE coastal plain-EOSPECS

Minimum Criteria for an Occurrence: Five individuals.
Separation Barriers: Pine plantations, long-unburned pine stands with dense shrub layer, developed or agricultural areas.
Separation Distance for Unsuitable Habitat: 1 km
Separation Distance for Suitable Habitat: 2 km
Alternate Separation Procedure: N/A
Separation Justification: Insect pollinated, primarily flies, Lepidoptera, or beetles. Seed is wind dispersed. Two km is sufficient to separate populations.
Date: 18Sep2003
Author: Chafin, L.G.
Population/Occurrence Viability
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Justification: Use the Generic Guidelines for the Application of Occurrence Ranks (2008).
The Key for Ranking Species Occurrences Using the Generic Approach provides a step-wise process for implementing this method.

Key for Ranking Species Element Occurrences Using the Generic Approach (2008).
U.S. Invasive Species Impact Rank (I-Rank) Not yet assessed
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Authors/Contributors
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NatureServe Conservation Status Factors Edition Date: 09Jul1993
NatureServe Conservation Status Factors Author: Stoner, N., rev. J. Beckman (3/96)

Botanical data developed by NatureServe and its network of natural heritage programs (see Local Programs), The North Carolina Botanical Garden, and other contributors and cooperators (see Sources).

References
Help
  • Cronquist, A. 1980. Vascular flora of the southeastern United States. Vol. 1. Asteraceae. Univ. North Carolina Press, Chapel Hill. 261 pp.

  • Gandhi, K.N., and R.D. Thomas. 1989. Asteraceae of Louisiana. Sida, Botanical Miscellany No. 4. Southern Methodist Univ., Dallas, TX. 202 pp.

  • Godfrey, R.K., and J.W. Wooten. 1981. Aquatic and wetland plants of southeastern United States: Dicotyledons. Univ. Georgia Press, Athens. 933 pp.

  • Jones, S.B., Jr., and N.C. Coile. 1988. The distribution of the vascular flora of Georgia. Dept. Botany, Univ. Georgia, Athens. 230 pp.

  • 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.

  • Long, R.W., and O. Lakela. 1971. A flora of tropical Florida. Univ. Miami Press, Coral Gables, Florida. 962 pp.

  • Radford, A.E., H.E. Ahles, and C.R. Bell. 1968. Manual of the vascular flora of the Carolinas. Univ. North Carolina Press, Chapel Hill, NC. 1183 pp.

  • Weakley, Alan S.  2015.  Flora of the Southern and Mid-Atlantic States.  Unpublished mss. available as .pdf from the Herbarium, University of North Carolina, Chapel Hill.  1320 pp.

  • Wunderlin, R.P. 1982. Guide to the vascular plants of central Florida. Univ. Presses Florida, Gainesville. 472 pp.

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