Corydalis micrantha doesn't appear to be widely distributed in GA according to the USDA map, but looks to be in greene's location.
The species is said to be identified by the "erect fruits, silvery-green leaves and the straight spur of it's flower" according to missouriplants.
http://www.missouriplants.com/...
Corydalis flavula doesn't appear to match, the spur is curved downwards slightly.
http://www.missouriplants.com/...
http://luirig.altervista.org/f...
There is a similarity to Corydalis aurea ssp. occidentalis, and there is a possibility it escaped from someone's garden even though it's not naturally in GA.
http://swbiodiversity.org/sein...
