Helianthus simulans (Muck Sunflower)

Native to the southeastern and south-central United States, this perennial herb grows in moist soils and seasonally wet sites. Erect, branching shoots bear narrow, hairy green leaves, with foliage both near the base and along the stems. Numerous flower heads appear from late summer into autumn. Yellow ray florets surround a dense center of yellow or reddish disk flowers with dark anthers. Bees visit the blooms, and dry seedlike fruits mature afterward. Its tall, spreading growth suits open wetland margins and naturalized plantings. Photographed in Florida.