According to my records mine came from Texas Water Lilies in 2010 as 'Almost Black'. It cost twice as much as any other I ordered at that time, so I must have really wanted it.
I have a terrible time keeping track of the water lily plants once they've been in the water for a while--every kind of tag I've tried has worked itself out (possibly with the help of the fish). I just haven't been able to identify water lilies by looking at them, either, especially given the variability with temperature and maturity. I've taken to cataloging what I put into each pond instead. As long as I don't put two similar lilies in the same pond I can tell what each one is when it blooms. And really, why would I need two similarly blooming lilies in the same pond anyway?
Nice shot with the koi behind the iris. I had some Japanese iris from Aitken's for a while, but lost them one spring. I was keeping them wet during the growing season and leaving them mostly dry (outside) during the winter, but one year they just melted away before spring. Not sure what I did wrong, so I'm taking a break from them until I can come back with more knowledge and better observation.
