Eichhornia crassipes (Mart.) Solms, an aquatic plant native to the Amazon Plain of South America, has a mating system of three floral morphs (L, M, and S) - tristyly.

 
  • 原产于亚马逊河流域的水生植物凤眼莲(Eichhornia crassipes)在花部结构上有三种花型(L、M和S),故其配殖系统(mating system)为典型的三型花柱(tristyly)。
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