noun
- Sunflower of eastern North America having narrow leaves and found in bogs.
- synonyms: swamp sunflower
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). helianthus angustifolius. Retrieved September 26, 2026, from http://smartdefine.org/helianthus_angustifolius/definitions/1284551 |
| Chicago | WordNet. 2010. "helianthus angustifolius" http://smartdefine.org/helianthus_angustifolius/definitions/1284551 (accessed September 26, 2026). |
| Harvard | WordNet 2010, helianthus angustifolius, Smart Define, viewed 26 September, 2026, <http://smartdefine.org/helianthus_angustifolius/definitions/1284551>. |
| MLA | WordNet. "helianthus angustifolius" 23 October 2010. Web. 26 September 2026. <http://smartdefine.org/helianthus_angustifolius/definitions/1284551> |