polygenetic

Short definition from Wiktionary

Adjective

1. 1
   Having many distinct sources; originating at various places or times.
2. 2
   Of or pertaining to polygenesis; polyphyletic.
3. 3
   One which is composite, or consists of two or more monogenetic ranges, each having had its own history of development.
4. 4
   Polygenic.