Tropicals & Tender Perennials: Is This Alocasia macrorrhizos 'Black Stem', 1 by toy747

toy747 wrote:
I bought this a couple of years ago at the Aroid Show at Fairchild Gardens. I never knew the name but always assumed it was Alocasia macrorrhizos 'Black Stem'. When I bought it I was told it would grow to about 4'. It is definitely taller than that but not by much. I just looked up Alocasia macrorrhizos and read it grows to 15'. If that's what I have I better move it,
I would really appreciate any help with an ID.
Thanks so much!