Synonyms
Lomatium megarrhizum (A.Nelson) Mathias
Cynomarathrum megarrhizum (A.Nelson) Rydb.
Neoparrya megarrhiza (A.Nelson) W.A.Weber
Seseli nuttallii A.Gray
Aletes megarrhiza (A.Nelson) W.Weber
Peucedanum megarrhizum A.Nelson
Aletes nuttallii (A.Gray) W.Weber
Cynomarathrum nuttallii (A.Gray) J.M.Coult. & Rose
Cogswellia nuttallii (A.Gray) M.E.Jones