The plant people are calling Alocasia 'Polly' is actually a selection of the hybrid that has been called Alocasia amazonica. Neither name is a true or valid name, but since the name "Alocasia amazonica" has been used for so long, most people recognize that hybrid by that name. To make things even more interesting, "Polly" should actually be 'Poly', so named because the selection was believed to be a polyploid of the "original" amazonica. The "amazonica" came from the nursery that originated the cross - it was "Amazon nursery'. In reality, no Alocasia species occur naturally in the Amazon rainforest.
A variegated "Polly" is not common, although I have seen a few from time to time. I'm curious to see if the variegation holds somewhat stable or if it is lost with subsequent growth.
LariAnn
