What makes it remarkable is that very few areas of the world have unique species of water plants. As a species unique to the island, Nuphar shimadai has attracted the attention of international scholars.
而更難得的是，在世界各地區裡很少有特有種水生植物的情形下，獨獨台灣萍蓬草是台灣特有種，而引起國際學者的重視。