pol·y·phy·let·ic 
(pŏl′ē-fī-lĕtĭk)
(pŏl′ē-fī-lĕtĭk)adj.
1. Of or relating to a group of taxa that does not include the common ancestor of all the members.
2. Of or derived from more than one stock or source.
pol′y·phy·leti·cal·ly adv.
poly·phy′ly (pŏlē-fī′lē, pə-lĭfə-lē) n.