Glossary of "Plant Biology (1st ed.)" by Graham et al. (2003)
- The process of speciation in which populations of a single species become geographically isolated from each other and are subjected to differential evolutionary forces. Allopatric comes from the Greek allos meaning "other" and patra meaning "fatherland."
Glossary of "Evolution (4th ed.)" by Futuyma & Kirkpatrick (2017)
- Speciation by genetic divergence of allopatric populations of an ancestral species; contrasted with parapatric and sympatric speciation, in which divergence occurs in parapatry or sympatry (q.v.).
- Graham, L. E., Graham, J. M. & Wilcox, L. W. 2003. Plant Biology. -xxxv + 497 pp. Pearson Education, Inc., Upper Saddle River.
- Futuyma, D. J. & Kirkpatrick, M. 2017. Evolution, 4th ed. -xviii + 602 pp. Sinauer Associates, Inc., Sunderland.