OK, first of all, there is no iris registered under the name 'Reddy Blue' unless it is a 2006 introduction that hasn't yet been published in the annual Registrations and Introductions booklet. Second, 'Wings of Night' wasn't even introduced until 1991, so it couldn't possibly have been growing in any stream for 50 years. I suspect what you pulled out of that stream was a native iris, most likely either a versicolor or a virginica. Both versicolor and virginica grow natively in swampy areas, and I know from personal experience that versicolor grows quite happily in a typical garden setting, as well.

The columbine you describe sounds like Aquilegia canadensis (red columbine), another native wildflower. You can find photos and information on it here.

I don't know what the bush might be.

Laurie

I agree with Laurie about the ID of the iris, and the columbine. The bush sounds like a native azalea.

Bush sounds like native azalea to me too.

Zone 4b he's going to be finding versicolor. It comes in mostly blue but there are other colors out there and sometimes you do find those colors in the wild. So far I haven't been lucky enough. Just have slightly lighter or slightly darker ones. Most are all the same and I have literally thousands of them here.

Siberians take periodic flooding but you aren't going to find them in places that are prepetually soaked. Sometimes you spot some around old forgotten foundations. I've got a sizeable patch of blue and white down the road from me fighting with the field weeds and the state lawn mowing. Snagged out a bit of each color to save them. Old timers told me the patch has been shrinking each year with the state's enlightened care. Stones from an outbuilding so far have saved them from final destruction.

Zone 4b, azaleas, columbine and versicolor. Taking a shot that your somewhere in New England.

If he is in MN, it could be either versicolor or virginica. We have both growing natively here in zone 4b.

Well what knowledgeable folks. I checked your info. Exactly correct I have both IRIS VERSICOLOR "HARLEQUIN BLUE FLAG" and "VIRGINICA." The Columbine is right on also. I just never seen these anywhere around except there. The bush I need to get a picture of both thats hard with little light under the trees. I'm going to get some of the Columbines soon before it snows. I am in upper NEW YORK state 80 miles south of Canada. BOONEVILLE,NY

In well traveled areas they tend to get picked into oblivion. Never heard of Harlequin blue flag. Blue flag is just a term for any old iris that is near species form. Pretty generic.
The columbine will resent transplant unless it's a small seedling. Things with taproots don't transplant well. Reason you don't see them. People go back to get some and then they are gone. Little late to be transplanting things now anyway. I shut myself off in mid August unless I know it's something tough. It does grow readily from seed and seed is commercially available. Perfect plant for winter sowing.

Bush might be in the link. The other pink ones I could think of are the laurels. The wild rhodies/azaleas are on the following page.

Here is a link that might be useful: CT wild flowers