Full Flower Disclosure: These are not Irises from our garden. Fernymoss took these as he was talking with our neighbor across the street (our boulder benefactor) on 22 May, 2008. So these lovely specimens are now currently gracing the top border of their garden, not ours (alas!). 
We've always found Irises fascinatingly beautiful and complex blooms, and they're certainly challenging to photograph in macro ... though it seems less daunting with the new S700 this year ...
Since I can't really speak to the specifics of these Irises (I didn't even know they had planted them!), I'll just let these photos speak for themselves. I'm particularly fond of the second one, but I do think all of them have quite interesting details to add, helping to reveal the inner parts of the Iris.
Late Update 5/27: I realized overnight that this post rolled the number over to 300 total for Urban Oasis since June, 2006. I was hoping to feature something really amazing (like the Dragon Arum), but this is what circumstances handed me. Not a bad compromise, I'd say ...
