| Lithophragma affine mixtum R.L.Taylor | Lithophragma affine A.Gray |
| Lithophragma anemonoides Greene | Lithophragma parviflorum (Hook.) Nutt. |
| Lithophragma australe Rydb. | Lithophragma tenellum Nutt. |
| Lithophragma austromontanum A.Heller | Lithophragma parviflorum (Hook.) Nutt. |
| Lithophragma brevilobum Rydb. | Lithophragma tenellum Nutt. |
| Lithophragma bulbiferum Rydb. | Lithophragma glabrum Nutt. |
| Lithophragma catalinae Rydb. | Lithophragma affine A.Gray |
| Lithophragma glabrum bulbiferum (Rydb.) Jeps. | Lithophragma glabrum Nutt. |
| Lithophragma intermedium Rydb. | Lithophragma affine A.Gray |
| Lithophragma parviflorum trifoliatum (Eastw.) Jeps. | Lithophragma trifoliatum Eastw. |
| Lithophragma rupicolum Greene | Lithophragma tenellum Nutt. |
| Lithophragma tenellum floridum Suksd. | Lithophragma glabrum Nutt. |
| Lithophragma tenellum thompsonii (Hoover) C.L.Hitchc. | Lithophragma tenellum Nutt. |
| Lithophragma thompsonii Hoover | Lithophragma tenellum Nutt. |
| Lithophragma trifidum Eastw. | Lithophragma affine A.Gray |
| Lithophragma trilobum Rydb. | Lithophragma heterophyllum (Hook. & Arn.) Torr. & A.Gray |
| Lithophragma tripartitum Greene | Lithophragma affine A.Gray |
| Lithophragma williamsii (D.C.Eaton) Greene | Conimitella williamsii (D.C.Eaton) Rydb. |