Found in natural light woodland, alongside a trail, on a south-facing slope in northeastern Indiana, zone 5b.

Individual flowers are very small.


Tips resemble vines, with (it looks like) clockwise twining ends.


Entire plant shown here is 12 - 14" tall.


Bloom period began early April here.

This is the closest I can find:
Vicia caroliniana Walter
Carolina vetch
http://plants.usda.gov/java/pr...

Thank you so much, Lee Anne!

I looked at several site's images and that looks very promising.

I knew it looked familiar...