Description: English: Dicrocoelium dendriticum, from teaching slides at the University of Edinburgh.The Lancet liver fluke (Dicrocoelium dendriticum) is a parasite fluke that tends to live in cattle or other grazing mammals. Date: 26 November 2006. Source: Own work. Author: Adam Cuerden. Other versions: File:Dicrocoelium dendriticum.jpg.