As I understand, advena has pointed edges to the leaf where it has its sinus, and leaves usually rise above the water, some float one-hal...Read Moref of the leaf on the water (front half points up, back fins on surface.)
I observed it crowded into shallow ponds in the midwest.
As a pond plant, it seems more vigorous and heat-tolerant than other Nuphar.
As I understand, advena has pointed edges to the leaf where it has its sinus, and leaves usually rise above the water, some float one-hal...Read More