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Alnus rubra - Wikipedia
Red Alder, Alnus rubra - Native Plants PNW
Red Alder (Alnus rubra) | Oregon Wood Innovation Center
Red Alder - US Forest Service Research and Development
Alnus rubra (Oregon Alder, Pacific Coast Alder, Red Alder, …
Alder Trees: Leaves, Bark, Flowers, Cones – Identification (Pictures)
Alnus rubra - WNPS
Red Alder - Alnus rubra - PNW Plants - Washington State University
Alnus rubra (Red Alder) - Gardenia
Alnus rubra english - US Forest Service Research and Development