noun
- North American perennial with bright yellow late summer flowers.
- synonyms: autumn sneezeweed
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). helenium autumnale. Retrieved September 26, 2026, from http://smartdefine.org/helenium_autumnale/definitions/1284543 |
| Chicago | WordNet. 2010. "helenium autumnale" http://smartdefine.org/helenium_autumnale/definitions/1284543 (accessed September 26, 2026). |
| Harvard | WordNet 2010, helenium autumnale, Smart Define, viewed 26 September, 2026, <http://smartdefine.org/helenium_autumnale/definitions/1284543>. |
| MLA | WordNet. "helenium autumnale" 23 October 2010. Web. 26 September 2026. <http://smartdefine.org/helenium_autumnale/definitions/1284543> |