Antigonon leptopus
Common name: Coral Vine.
Antigonon leptopus is a perenial plant native to Mexico. It is naturalized in some South state of USA.
I read it is invasive plant in Florida.
http://plants.ifas.ufl.edu/nod...
So, I'm sorry, but you from Florida must pay attention if you wont to grow this plant.
I met this plant in Texas in Goliad, Beeville and Corpus Christi.
I saw it only in urban area. As much as I can tell, is that it is naturalized in Texas, but I think it has not invasive behavior in these areas. Of course, I can not make accurate overall assessment. But I never met her, outside urban areas.
It is a vine, it climbing on fences, trees and even on the poles.
The plants, that I have seen, had a very beautiful pink color.
It's a very beautiful plant. Rich blooms. Flowering period is long. But caution should be if it turns out to be invasive in your area.
Pictures taken on may, 10, 2011 in Goliad city, Texas.
Flowers
Leaves
Pictures taken on may, 30, 2011 in Beeville city, Texas, in an small lot, situated in urban area, abandoned to the wild.
detail of tendril attachment
I love those small lots situated in urban area. They can be very rich in wildflowers and very beautiful.
( Unfortunately some people don't listen yet this voice
http://www.youtube.com/watch?v... 
)
Pictures taken on october, 24, 2011 in Beeville city, Texas. Plants on a fence close of the small wild lot, mentioned above.
Pictures taken on november, 26, 2011 in Beeville city, Texas. Same location, fence, the above.
Time was cloudy. Perhaps because of that flowers were not open.
underside side of a leaf
I read that there is a variety with white flowers, but I met only with pink flower.
detail of tendril attachment 
