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...