Lomatium donnellii (Donnell's biscuitroot or glaucous desert parsley)[2][3] is a perennial herb of the family Apiaceae, in the Western United States.

Lomatium donnellii was first described in 1888 by John Merle Coulter and Joseph Nelson Rose as Peucedanum donnellii.

[5] As of August 2021[update], Plants of the World Online considers Lomatium plummerae and its variety helleri to be synonyms of Lomatium donnellii.

[1] In addition, the Jepson eFlora considers L. plummerae var.

sonnei to be synonyms of Lomatium donnellii,[6] whereas Plants of the World Online considers them synonyms of Lomatium austiniae.