A good article on the use(s) of Shepherds Purse to stop bleeding, both external and internal.
http://undergroundmedic.com/2015/06/weedsplantsherbsnatural-medicinetincture/This plant grows wide in our area. Look for the distinctive leaf and seed pods to identify
The article has some pictures but better ones may be found on 'net.
The plant is also an nutritious edible, either raw or cooked. Note the warning for pregnant women.