Native plant · ASTERACEAE
Helianthus radula
STIFF SUNFLOWER; Rayless Sunflower
Florida native plant record
This profile summarizes published Florida Seed Bank directory data for Helianthus radula. County information reflects documented specimen or occurrence evidence and does not guarantee current presence at a site.
- Scientific name
- Helianthus radula
- Family
- ASTERACEAE
- Genus
- Helianthus
- Order
- ASTERALES
- Classification
- Dicots
- Recorded status
- Native; FAC (NWPL)
- Florida range
- North Florida · Panhandle · Central Florida · South Florida
- Vouchered / Found in Florida
- Putnam; St. Johns; Alachua; Washington; Orange; Franklin; Sumter; Liberty; Jackson; Hardee; Pasco; Hernando; Holmes; Clay; Duval; Bradford; Okaloosa; Bay; Gulf; Walton; Levy; Polk; Marion; Hillsborough; Citrus; Lake; Leon; Santa Rosa; Flagler; Calhoun; Collier; Escambia; Wakulla
Verified ecology and propagation
- Native habitat
- flatwoods
- Moisture
- moist
- Restoration considerations
- Habitats: Flatwoods; Life history: Perennial; Flowering: September to November; Flowering height: 2 to 3 feet; Guide notes: Slightly moist site; novelty plant
Where documented in Florida
Putnam; St. Johns; Alachua; Washington; Orange; Franklin; Sumter; Liberty; Jackson; Hardee; Pasco; Hernando; Holmes; Clay; Duval; Bradford; Okaloosa; Bay; Gulf; Walton; Levy; Polk; Marion; Hillsborough; Citrus; Lake; Leon; Santa Rosa; Flagler; Calhoun; Collier; Escambia; Wakulla
Historical specimen evidence; current presence and complete county coverage are not confirmed.
Related Florida native plants in Helianthus
- Helianthus agrestis — SOUTHEASTERN SUNFLOWER
- Helianthus angustifolius — NARROWLEAF SUNFLOWER; SWAMP SUNFLOWER
- Helianthus atrorubens — PURPLEDISK SUNFLOWER
- Helianthus carnosus — LAKESIDE SUNFLOWER; FLATWOODS SUNFLOWER
- Helianthus debilis subsp. cucumerifolius — CUCUMBERLEAF DUNE SUNFLOWER
- Helianthus debilis subsp. debilis — EAST COAST DUNE SUNFLOWER; cucumberleaf sunflower
Data provenance
Florida Seed Bank preserves source attribution and separates documented records from interpretation. See the plant data credits for directory sourcing and licensing notes.