Late note: I figured it out. Perilla fruitescens var crispa. Perilla is usually thought of as Perilla Magilla P. fruitescens var. japonica of the garden center, deep purple in plenty of light. This is the green one called shiso in Japan. They eat it, we don't. Said to be poisonous to cattle. I haven't gone back to smell it yet.
Odor is an important tool in trying to identify a plant. If it smells like mint, that's a place to start; square stems indicate the mint family too but I digress. I found a plant today I had not seen in the wild meadows.
It was on the northeast side of the 3 acre woods. One big clump was all I saw, in a kind of low area. I toured pretty much the whole meadows area except for the high side next to the cornfield, and the hayfield.
I looked in my Audobon Wildflowers book and in the Golden Guide to Wildflowers and Golden Guide to Weeds without success. Have not yet looked in Midgley's All About Georgia Wildflowers. I frequently have better success looking at Florida's native plants than Georgia's.
Oh, I wish I had thought to smell it! I was afraid it might be some kind of nettle and I didn't want stinging skin all the way home, so I didn't touch it.
The other thing I haven't done is to search on Google Images. Once the blog post is done, I'll try image matching. I will expect hilarious matches instead of a similar plant, but who knows?
You don't happen to recognize this plant, do you?