What plants is Alocasia 'Nishihira' a cross of?

I don't believe that A. 'Nishihira' is a hybrid; to me it looks like a selection of Alocasia brancifolia. Both plants, along with Alocasia boa and Alocasia lauterbachiana, are members of what used to be the genus Xenophya, where I personally think they should still be due to their peculiar inflorescence morphology.

LariAnn

thanks!

do you have a picture of this inflorescence morphology?
What is different from other Alocasia?

I don't have a picture handy but the upper part of the spathe is very narrow, relatively long, with a very thin spadix within, while the bottom part is somewhat bulged out and seems ribbed. When the bloom opens, it opens only a small bit just above the bottom portion of the spathe. If you are not paying close attention, it appears that the bloom doesn't open at all! This behavior and morphology is totally unlike any other Alocasia blooms I have worked with or studied.