An Etymological Dictionary of the German Language/Annotated/Eppich
Eppich, masculine, ‘celery, parsley,’ with Low German consonants, from Middle High German ępfĭch, Old High German ępfī̆h, neuter, which are preceded by the shorter forms, Middle High German ępfe, ęffe, Old High German ępfi, neuter. This word, like other names of plants connected with horticulture and cookery, was borrowed previous to the Old High German period (see Kohl) from Latin; the original word in this instance is apium, which denotes a species of umbelliferous plants, comprising parsley, celery, &c.; only in Modern High German has Eppich been confused in meaning with Epheu.