A marsh plant(Calla palustris) of the North Temperate zone, having small, densely clustered, greenish flowers partly enclosed in a spreading white spathe.

• 水芋生于北温带的一种沼泽植物（水芋水芋属），长有小的、紧簇的、部分包在伸展的白色花苞内的浅绿色花朵