| Cynomarathrum brecciarum (M.E.Jones) Rydb. | Lomatium cusickii (S.Watson) J.M.Coult. & Rose |
| Cynomarathrum eastwoodiae J.M.Coult. & Rose | Lomatium eastwoodiae (J.M.Coult. & Rose) J.F.Macbr. |
| Cynomarathrum latilobum Rydb. | Lomatium latilobum (Rydb.) Mathias |
| Cynomarathrum megarrhizum (A.Nelson) Rydb. | Lomatium nuttallii (A.Gray) J.F.Macbr. |
| Cynomarathrum nuttallii (A.Gray) J.M.Coult. | Lomatium nuttallii (A.Gray) J.F.Macbr. |
| Cynomarathrum scabrum J.M.Coult. & Rose | Lomatium scabrum (J.M.Coult. & Rose) Mathias |