About Astragalus bibullatus Barneby & E.L.Bridges
Astragalus bibullatus Barneby & E.L.Bridges, commonly known as limestone glade milkvetch or Pyne's ground plum, is an endangered species of flowering plant. It is endemic to the cedar glades of the central basin of Tennessee in the United States. All eight known populations of this species are located within a few kilometers of each other in Rutherford County, Tennessee.