Regularity: Regularly occurring
Global Range: Endemic to northeast Florida; found in Flagler and St. Johns counties. Historic records (pre-1950) from Clay and Volusia counties.
Helianthus carnosus may be characterized by solitary heads, the disk of the flower about 1.5 cm wide and by leaves mostly basal, with blades usually more than 7 mm wide (Small, 1933).
Comments: Clearings of moist to wet low pineland savannas, typically on black, highly organic sandy peat (Kral 1983).
Number of Occurrences
Note: For many non-migratory species, occurrences are roughly equivalent to populations.
Estimated Number of Occurrences: 6 - 20
Comments: 19 known occurrences as of 2004 Status Survey.
Life History and Behavior
National NatureServe Conservation Status
Rounded National Status Rank: N1 - Critically Imperiled
NatureServe Conservation Status
Rounded Global Status Rank: G1 - Critically Imperiled
Reasons: A Florida endemic, with 19 known occurrences, located in Flagler and St. Johns counties. Populations are decreasing due to drainage of habitat for agriculture and residential construction.
Environmental Specificity: Narrow. Specialist or community with key requirements common.
Global Short Term Trend: Decline of 10-30%
Comments: Known population increased as of the 2004 Status Survey but there are no known protected popualtions and most are threatened by roadside management.
Global Long Term Trend: Decline of 70-90%
Degree of Threat: Very high - high
Comments: Habitat being drained for agriculture and some for residential construction (stormwater treatment).
Relevance to Humans and Ecosystems
Stewardship Overview: Controlled burnings and/or clearcutting of overstory may be a necessary part of a management regimen for this species. Its habitat should never be drained (Kral, 1983).
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