The plant family Nymphaeaceae was named and described as such by Richard Anthony Salisbury in Annals of Botany in 1805.
As of 7-17-21 when last updated this page, Plants of the World Online by Kew lists five genera in the family commonly referred to as the Water Lily Family.
I noticed a waterlily had started to grow in one of my ponds in 2019. There had been quite a few in the lake at the park next to my farm, but I think they started getting out of hand and they had to do something about it. Anyway, there aren’t as many there as there used to be. Many years ago I went fishing with a friend on a large pond that was so full of water lilies you could barely even see the water…
I wrote a page about the Nuphar advena which you can read by clicking HERE. It doesn’t have much information yet but there are several links to other websites.