a European creeping plant(Lysimachia nummularia) naturalized in eastern North America,having rounded,opposite leaves and single,axillary yellow flowers

• 铜钱状珍珠菜，一种产于欧洲的蔓生植物（珍珠菜属铜钱叶草），已被引植入北美东部地区，生有圆形的对生叶，开黄色的单瓣腋生花