Lotus pond in Dresden

The Dresden Botanical Garden prides itself in having a large lotus pond within the greenhouse. The star attraction is the Victoria amazonica, the giant water lily from Amazon, which is right in the niddle of the pic. If you click to enlarge the picture, you can also see the yellow bloom of Nymphaea mexicana at the bottom left.

I think this is Nymphaea caerulea although I could not find the tag for this calmingly subtle bloom.
Nymphoides ezzannoi - a small African member of lotus family.