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Helianthus resinosus
Also called Resin Dot Sunflower, Resinous Sunflower, Resondot Sunflower
Helianthus resinosus is a North American species of sunflower known by the common name resindot sunflower. It is native to the southeastern United States from Mississippi to North Carolina.
Helianthus resinosus grows in open swamps and meadows, and along roadsides. It is a perennial herb up to 300 cm (10 feet) tall, spreading by means of underground rhizomes. Leaves are up to 20 cm (8 inches) long, dotted with visible resin glands embedded in the leaves. One plant usually produces 1-5 flower heads, each containing 10-20 yellow ray florets surrounding 90 or more yellow disc florets.
Southeastern sunflower · Helianthus ambiguus · Swamp sunflower · Common sunflower · Western sunflower · Silverleaf sunflower · Arizona sunflower · Purpledisk sunflower · Serpentine sunflower · Helianthus brevifolius · California sunflower · Lakeside sunflower
Text excerpted from the Wikipedia article Helianthus resinosus by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
