To take the five native species of water lily as an example, Euryale ferox, Nymphaea tetragona, and Nymphaea lotus var. phbescens have long been extinct, and Brasenia schreberi is also endangered. Only Nuphar shimadai is still hanging on in a few old ponds in Taoyuan.
以台灣原產的五種睡蓮科植物為例，其中芡（Euryale ferox）、午子蓮（Nymphaea tetragona）、紅花睡蓮（Nym-phaea lotus var. pubescens）早已絕種，而蓴菜（Brasenia schreberi）亦已瀕臨滅種，只有台灣萍蓬草（Nuphar shimadai）在桃園的一些老池塘裡一息尚存。