More research needed. If Galactia, then a PEA pod; if Desmodium, then a BEAN pod - DM, MD 9/2/11 tiny spurred flower, less than 1/2".

could be Hairy Milk Pea (Galactia volubilis
http://plants.usda.gov/java/profile?symbol=GAVO&photoID=gavo_003_avp.tif
or could be something else

http://www.missouriplants.com/Pinkalt/Galactia_volubilis_page.html