pickerelweed
/ˈpɪkərəlwiːd/noun
mass noun
1- either of two broadleaved freshwater plants which were formerly believed to give rise to, or provide food for, young pike（传说作为小狗鱼食物的两种阔叶淡水植物之一的）小狗鱼草：
1.1
- a North American plant with spikes of blue flowers (Pontederia cordata, family Pontederiaceae).梭鱼草（拉丁名Pontederia cordata, 雨久花科）。