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。
2
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。
3
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.