For the past few years I have seen a white-flowering plant blooming in December and January. Today I was finally able to pull the car close enough so I could get a look at the plant. It is a Clematis and looks like the one that grows in my garden. It looks almost identical except for bloom time. I'll try to bring a camera next time I drive out that way...

Here is the plant in my garden:
The thread "Banner for September 14, 2014 by greene" in Site Banners forum

Which Clematis would be growing in south Georgia and blooming in the winter?

There are quite a few winter bloomig Clematis. Without a photo, its impossible to say which one. Look at these and see if you see a match:

http://www.gardensillustrated....

Thanks for the link.
I had already looked and rules out most everything that blooms in the winter. I know I did not have a camera with me but the plant looks just like the one in my first post. Four petals, looks like a wild or native type of Clematis, nothing fancy at all.
If it doesn't rain I'll try to get pictures.

So far the closest I can find is Clematis armandii (native to China) but the one I saw has four skinny petals. I only got a quick look at there were cars and trucks whizzing by. Maybe early Sunday morning would be a safer time to check and try for photos...any cuttings.

My mother had a huge Clematis armandii growing on a wall of her house in Vancouver BC. As I recall it did bloom in very late fall or winter.

Other than the lovely fragrant (! ) flowers I do recall that hers was evergreen, and had very large, long angular leaves that were also exceptionally dark green. They might have been 5 or 6in. long. (but it was a long time ago . . )

Can you stop near that plant some time (maybe early in the morning?) and get out of your car, to see if its flowers are fragrant, get a picture and a good look at the leaves? Is it in someone's yard, or can you take a cutting??

It's along the roadside and not in anyone's yard so yes, cuttings will be no problem. I missed my opportunity this morning but will try again. I'll take your advice and go early to capture some images and to check if there is fragrance. Thanks.