I think this might be Desmodium incanum. Also, there seems to be some overlapping in the names?

http://en.wikipedia.org/wiki/D...

Desmodium nuttallii is possible? A herbarium specimum showing leaves ..

http://vascularflora.appstate....

http://luirig.altervista.org/s...

This photo isn't the best ..

http://www.wildflower.org/gall...

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

28'. Leaves averaging smaller, 2.5–9 cm long, 2.5–5.5 cm wide, lanceolate, ovate, rhombic, oblong or
rarely deltoid; fruit composed of 2–4 segments, downturned in outline, individual segments
rounded in outline; ...... [mature fruit necessary to conclusively distinguish this species from the previous].............................................................................................
Desmodium nuttallii (Schindl.) B.G. Schub.

http://www.cals.ncsu.edu/plant...

http://apps.kew.org/herbcat/ge...

Photos of Desmodium incanum

http://www.tropicalforages.inf...

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

http://commons.wikimedia.org/w...

Thank you for your help on this, Janet. Sadly, I'm still not sure.

I think I'll have to look for this one again this year; maybe get pictures to better show the size. The plant is a creeping type, slow growing ground cover. The bees swarm it when flowering. It's rather small, the smallest of the Desmodium species growing around here; I would guess the leaves do not get any bigger than 3 centimeters, probably more like 2 centimeters long, the flowers are even smaller.

There are other desmodium species growing around here too. Most are unidentified to date.

I could possibly be a Galactia.
https://www.google.com/search?...

Thank you, Jay. I'm going to research this, it does look very possible.