Noun: white alder
- Tree of western United States
"White alder grows along mountain streams in California";
- mountain alder, Alnus rhombifolia
- Shrub of eastern and southern coastal United States having beautiful racemes of spice-scented white flowers
"white alder filled the air with its fragrance";
- sweet pepperbush, pepper bush, summer sweet, Clethra alnifolia
Derived forms: white alders
Type of: alder, alder tree, bush, shrub
Part of: Alnus, genus Alnus
Encyclopedia: White alder