Eurasian alder tree (Alnus glutinosa) that is sometimes cultivated in North America, especially for its ability to grow in soils too wet for many other trees.

• 黑桤木：一种欧亚产桤树（欧洲桤木桤木属）有时在北美种植，尤其因为该树具有能在对于许多其他树来说过于湿润的土壤中生长的能力