noun
- Tree of western United States.
- synonyms: mountain alder, Alnus rhombifolia
- Shrub of eastern and southern coastal United States having beautiful racemes of spice-scented white flowers.
- synonyms: sweet pepperbush, pepper bush, summer sweet, Clethra alnifolia
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). white alder. Retrieved September 22, 2026, from http://smartdefine.org/white_alder/definitions/1238692 |
| Chicago | WordNet. 2010. "white alder" http://smartdefine.org/white_alder/definitions/1238692 (accessed September 22, 2026). |
| Harvard | WordNet 2010, white alder, Smart Define, viewed 22 September, 2026, <http://smartdefine.org/white_alder/definitions/1238692>. |
| MLA | WordNet. "white alder" 23 October 2010. Web. 22 September 2026. <http://smartdefine.org/white_alder/definitions/1238692> |