Take a look a R. virginiana, it is a woodland edge grower & does sucker/spread on its own roots. Does not repeat but has some very interesting late season interest due to the massive amount of hips it sets. They turn bright red & are clustered almost like grapes.

All the eastern natives are designed for woodland/wetland edge habitat. Otherwise they just plain wouldn't be here. IME, setigera will grow and bloom in almost total shade. In your climate it will probably not take the breaks it does here when things turn hot, which can spread the bloom over almost two months. It should bloom later than most other once bloomers, which is nice. The thing to watch is that it tip-roots, and can cover a lot of ground quickly.

If you can get your hands on R. nitida, it is worth doing. This isn't a rose that likes hot and dry conditions, but has absolutely gorgeous foliage. It covers ground just by spreading out.

We've collected R. palustris, the "swamp rose," in dense shade, doing quite well, although it seems to prefer some sun. And while it's happy in quite waterlogged soils, it certainly does not require flooding. In central Florida, it flowers heavily in the spring but can put on a light flush again in the autumn and even a flower here and there through the winter (we seldom freeze). I could probably get you some seeds, although I'm not sure what kind of permits and/or phytosanitary certification you may need to import those seeds.
Malcolm

Here is a link that might be useful: R. palustris in Lakeland Florida

I can get my hands on plenty of R.virginiana as it is often used as a hedging rose and have ordered seeds of R,acicularis and R.pendulina. Mr.Manners, I would love seeds of palustris. We don't need any phytosanitary precautions over seeds, just plant material which is still in soil......or live material of certain sizes. I regularly order US native seeds from various sites. I could send you a stamped addressed envelope. Cannot seem to change my e.mail address on my profile though (the old one has not worked for a decade). Will have another go so you could pm me if possible (although I know you are a busy man)..
Any other ideas for seed sites (I could always check on ebay too)?
A whole new world of exciting rose possibilities has opened up for me.

Rosa woodsii--shortish, sweet, shade-tolerant. A lovely N. American native.

Prairie Moon Nursery in Minnesota sells seeds for half a dozen roses:
Rosa arkansana (Prairie Wild Rose)
Rosa blanda (Early Wild Rose)
Rosa carolina (Pasture Rose)
Rosa carolina alba (White Pasture Rose)
Rosa palustris (Swamp Rose)
Rosa setigera (Illinois Rose)

Scroll down the page for the roses.

Here is a link that might be useful: rose seed page