Can you help me identify these irises?

Iris pseudacorus (Yellow flag) likes wet feet and grows prolifically next to my pond in mush. It is tough, hardy, easily transplantable. You can hack off some and use them for gifts. They look like yellow butterflies from a distance.
http://en.wikipedia.org/wiki/Iris_pseudacorus

It’s hard to tell until they bloom, but I think you may have gotten it.

@gailcalled I was about to say the same thing. I’d say that’s what yours are syz, as they are more common than any others I know of.

I was given a strappy plant during the winter. It turned out to be an Apostle Iris, native to Brazil to S. Mexico, but a really nice house plant. I had a second bloom this morning; unfortunately each bloom lasts only one day.

http://www.radford.edu/~dwhite64/plant%20of%20week_files/Iris.htm

Something’s wrong with your last link, @gailcalled.

Sorry; here’s another one with less sharp images.

http://jennysgarden.com/bulbs-others/Neomarica_gracillis_Apostle_Iris_Walking.htm