This grew in my yard last year and again this year. It bloomed in March.
I don't mind if it is considered a weed or if it is a wildflower; it's a cute little thing growing less than a foot tall.

I couldn't make an identification by looking on the wildflower links for Georgia and for Florida.
Any idea where to look next?

It's Corydalis, but I'm not sure of the species.
Corydalis micrantha and Corydalis flavula are the only two species shown to grow in Georgia.

http://bonap.net/NAPA/TaxonMap...

I thought possibly Corydalis aurea but I don't really know:

http://es.wikipedia.org/wiki/C...

Golden Corydalis (Corydalis aurea)

But, probably C. micrantha:

http://plants.usda.gov/java/co...

No photo's and not a lot of info in the database as yet: Smallflower Fumewort (Corydalis micrantha)

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...

Thanks,

Between the thunderstorms, loss of power and me hitting the wrong key I have re-written this message about 4 times. Here goes my last attempt...

Many of the wild plants here are listed in Florida so I always check both Georgia and Florida first.
As to a plant being in the 'wrong' locale, I have observed that when the utility poles are installed and/or replaced, the workers unearth long dormant seeds. Also, I trade with people from several states, including Texas (maybe that part of my back yard is similar to Texas?). Third is the birds; the area where the plant grew is under a roosting/resting site for migratory and local birds.

First let me say I am happy this is a wildflower and not a 'weed'. Oh, and so many colors available if I decide to start a collection. Wow.

Armed with the name 'Corydalis' I did some more searching (between thunderclaps) and wonder if this could be Corydalis micrantha ssp. australis? My knowledge of the botanical terminology is limited, but in reading the descriptions of the various Corydalis, this one is described as having smaller flowers, the seed pods/capsules are long and more upright and the flower stem/stalk extends far beyond the foliage rosette.
http://www.southeasternflora.c...
http://plants.usda.gov/core/pr...
http://www.efloras.org/object_...

I would like to add the photos to the correct entry, but understand I may need to wait until March to get more detailed photos of the flowers, etc.

The illustration of Corydalis micrantha ssp. australis shows the 'spurs' to have a slightly downwards bend, those on the plant you show appear to be more straight which would indicate Corydalis micrantha is more likely.

http://luirig.altervista.org/c...

http://www.efloras.org/florata...

http://www.theplantlist.org/tp...

The description of the subsp. australis on Flora of North America does seem to fit apart from the stems which don't appear to be weak:

Stems usually weak. Inflorescences : racemes of chasmogamous flowers often greatly exceeding leaves, elongate; petal spur blunt, not globose at apex. Capsules slender, commonly 15-20 mm.

http://www.efloras.org/florata...

Location is OK. ..

http://www.efloras.org/object_...

Corydalis micrantha subsp. micrantha (which I would take as the 'straight' species):

Inflorescences : racemes of chasmogamous flowers not greatly exceeding leaves, often short; petal spur ± globose at apex. Capsules often stout, commonly 10-15 mm.

http://www.efloras.org/florata...

The question is, what would constitute "greatly exceeding leaves"? The flowers do look to rise well above the leaves, but can they rise even more?

Whether or not it is a subspecies, it would still fit into the straight species category.

If you look at the photos of the whole plant of Corydalis micrantha ssp. australis showing the full flowering stems, I would say they do rise much more from the leaves than the plant in question from what I can see.

http://www.southeasternflora.c...

So for now it's best to put the photos on the Cordyalis micrantha entry?

Next year I will take better picutures of the spurs. I am totally not telling anyone that I have no clue what a 'spur' is, except as for horse gear.
By next March I should have figured out what that is and where it's located.

I would 'risk' putting it in the Cordyalis micrantha entry. If you get more photos next year and find something which suggests it isn't, then you can move the entry. Given the options and descriptions, this looks correct.

If you think about what a spur is in horse gear, such as a thing that sticks out the back, it's the same!

https://www.google.co.uk/searc...

In this case it's not so obvious as you see in flowers like Aquilegia.

Okay, I will place the photos in the Corydalis micrantha and see if anyone raises a ruckus. Then will take better, more detailed photos next spring.
Thanks everyone who helped with this. It's been fun and very educational.
@JRsbugs, thanks for helping me to understand spurs...that don't jingle-jangle.

Done: Identified (for now) as Corydalis micrantha.