Alnus rubra
| Alnus rubra | |
|---|---|
| Red alder leaves | |
| Scientific classification | |
| Kingdom: | Plantae | 
| Clade: | Tracheophytes | 
| Clade: | Angiosperms | 
| Clade: | Eudicots | 
| Clade: | Rosids | 
| Order: | Fagales | 
| Family: | Betulaceae | 
| Genus: | Alnus | 
| Subgenus: | Alnus subg. Alnus | 
| Species: | A. rubra | 
| Binomial name | |
| Alnus rubra | |
| Natural range of Alnus rubra | |
| Synonyms | |
| 
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Alnus rubra, the red alder, is a deciduous broadleaf tree native to western North America (Alaska, Yukon, British Columbia, Washington, Oregon, California, Idaho and Montana).