noun
- Sunflower of eastern North America having narrow leaves and found in bogs.
- synonyms: Helianthus angustifolius
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). swamp sunflower. Retrieved September 21, 2026, from http://smartdefine.org/swamp_sunflower/definitions/1237486 |
| Chicago | WordNet. 2010. "swamp sunflower" http://smartdefine.org/swamp_sunflower/definitions/1237486 (accessed September 21, 2026). |
| Harvard | WordNet 2010, swamp sunflower, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/swamp_sunflower/definitions/1237486>. |
| MLA | WordNet. "swamp sunflower" 23 October 2010. Web. 21 September 2026. <http://smartdefine.org/swamp_sunflower/definitions/1237486> |