Beautiful irises, and gorgeous pictures, Larry.
The iris you have pictured as ensata Yellow is actually not an ensata. There are no true yellow Japanese irises. They keep trying, though! It is either a pseudacorus, or a cross between a pseudacorus and an ensata, called a pseudata. Reason I'm calling this to your attention, is that the straight pseudacorus and some of the crosses are highly invasive. So please be sure to deadhead before seed pods form, and do not let it get near any waterway, as even a teeny tiny piece can take over a huge area. Here's some info on it.
http://plants.ifas.ufl.edu/nod...
Please, folks, if you have this iris deadhead religiously.
OK, off my bandstand.