Many introduced plants have become naturalized across the continent and some are replacing North American native plant species.
许多引进的物种在整个大陆都已经顺化，一些种类正在取代北美本土植物种类。
Asiatic plant resembling spinach often used as a pot herb; naturalized in Europe and North America.
亚洲的一种类似于菠菜的草本植物，通常被用作一种调味品；在欧洲和北美移种。
A tropical Asian annual herb(Abutilon theophrasti) naturalized in the United States, having large, velvety, heart-shaped leaves and yellow flowers. It is an important fiber plant in northern China.
苘麻一种热带亚洲的一年生草本植物（苘麻属苘麻锦葵科），原产于美国，具有大而光滑的心形叶子和黄色花朵。它是中国北部的一种重要的纤维。
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