from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Having several variant forms, especially subspecies or varieties.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. having several different taxa of the next lower rank, especially having several subspecies
- adj. exhibiting polytypism
from The Century Dictionary and Cyclopedia
- Same as polytypical.
So right now things are undecided, and Chelydra may or may not turn out to be polytypic.
Thirty-one bird species are polytypic on the island.
One of your remarks I do not see the bearing of under your point of view -- namely, that in monotypic genera "the variation and variability" are "much more frequently noticed" than in polytypic genera.
A new polytypic species of the genus Uromastyx Merrem 1820 (Reptilia: Squamata: Agamidae: Leiolepidinae) from southwestern Arabia - Thomas M. Wilms and Andreas Schmitz