We are interested to know if the pods (densely hairy) are still intact with seeds inside... flowers from May to June and fruits during July through October.
Tephrosia spp. should be growing in dry, open woods and the best places to collect seed would have been burned this past spring.
Line drawing from: Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions.
Please let us know if you have a nice clump we could collect for our common garden study!
...all photos from the Southeastern Flora website: http://www.southeasternflora.com/
...line drawing from USDA PLANTS Profiles: http://plants.usda.gov/java/profile?symbol=TEVI&photoID=tevi_003_avp.tif