North American annual plant with usually yellow or orange flowers; grows chiefly on wet rather acidsoil.
北美一年生植物，花通常黄色或橙色；主要生长在潮湿酸性土壤中。
2
Aluminum is the main factor limiting plant growth on acidsoil.
铝是酸性土壤中植物生长发育的主要限制因子。
3
Al toxicity is a major limited factor for crop production and quality in acidsoil, and it has become the focus of ongoing research in the area of plant stress physiology and genetics.