• Baptisia cinerea (grayhairy wild indigo) | USDA PLANTS Database (About This Site)
• Baptisia cinerea | Biota of North America Project (BONAP) (About This Site)
• Baptisia cinerea (Raf.) Fernald & B.G.Schub. | Plants of the World Online (POWO) (About This Site)
• Baptisia cinerea | NatureServe Explorer (About This Site)