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