Lomatium austiniae (Austin's desertparsley or Sonne's desert parsley) is a perennial plant in the carrot family (Apiaceae) occurring in a limited area of Nevada.[1] It is named after Rebecca Merritt Smith Leonard Austin, who collected the type specimen.[2] It was formerly classified as Lomatium plummerae var. sonnei.[1] The epithet "austinae" is an orthographic variant subject to automatic correction without publication under ICBN Art. 60.11 to austiniae.