Baskin, J.M., and C.C. Baskin. 2005. Ecology of two geographically restricted Astragalus species (Fabaceae), A. bibullatus and A. tennesseensis, of the eastern United States. Ecology of two geographically restricted Astragalus species (Fabaceae), A. bibullatus and A. tennesseensis, of the eastern United States. Brittanic 57:345-353.
Authors: C Baskin