Native Plants

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Cressler, Alan

Helianthus radula

Helianthus radula (Pursh) Torr. & A. Gray

Rayless Sunflower

Asteraceae (Aster Family)

Synonym(s):

USDA Symbol: HERA

USDA Native Status: L48 (N)

From the Image Gallery

1 photo(s) available in the Image Gallery

Plant Characteristics

Duration: Perennial
Habit: Herb
Size Notes: Up to about 3 feet tall.
Fruit: Fruit is a cypsela (pl. cypselae). Though technically incorrect, the fruit is often referred to as an achene.

Bloom Information

Bloom Color: Yellow , Purple , Brown
Bloom Time: Sep , Oct , Nov

Distribution

USA: AL , FL , GA , LA , MS

National Wetland Indicator Status

Region:	AGCP	AK	AW	CB	EMP	GP	HI	MW	NCNE	WMVE
Status:	FAC

This information is derived from: U.S. Army Corps of Engineers. (2023). 2022 National Wetland Plant List, version 3.6. U.S. Army Engineer Research and Development Center, Vicksburg, MS. https://wetland-plants.usace.army.mil/. Click here for map of regions.

Web Reference

Webref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.

Research Literature

Reslit 2427 - A Vegetation Classification of Fire-Dependent Pinelands of Florida (2010) Susan C. Carr, Kevin M. Robertson and Robert K. Pe...
Reslit 2449 - Common native wildflowers of North Florida (2002) J. G. Norcini

This information was provided by the Florida WIldflower Foundation.
Search More Titles in Research Literature

Additional resources

USDA: Find Helianthus radula in USDA Plants
FNA: Find Helianthus radula in the Flora of North America (if available)
Google: Search Google for Helianthus radula

Metadata

Record Modified: 2025-12-09
Research By: DEW

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