Aponogeton "capuroni"

I just purchased an interesting Aponogeton labeled "A. capuroni".
There is no mention of this plant in either volume of Baensch or the
Booth plant list (my only plant references).  It matches the picture
and description of A. stachyosporus almost exactly.  Is "capuroni" a
real species, a cultivar name, or is this plant simply mislabeled?
Kevin Conlin   Montreal, Canada   "We're Canadians.  We HAVE to be polite"