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black alder (Alnus glutinosa); common alder (Alnus glutinosa); European alder (Alnus glutinosa) | |||
common alder | |||
alder (Alnus glutinosa) | |||
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hazel alder; smooth alder | |||
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European alder; black alder | |||
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hazel alder (Alnus rugosa, Alnus serrulata); smooth alder (Alnus rugosa, Alnus serrulata) |