Identical Cousins, Part II (Pilea nummulariifolia)

I think our first order of business here has to be to acknowledge that Plectranthus verticillatus and Pilea nummulariifolia are not, in fact, identical. More than that, they're not even cousins - Plectranthus is in the Lamiaceae (mint) family, while Pilea is from the Urticaceae (nettle) family.

And they're not even really distant cousins, as the Lamiaceae and Urticaceae aren't terribly related;