It has shown up!
ZAMUDIO-RUIZ & ORTEGA, ACTA BOT.MEX.28:58 (1994)
COMMENT: _Pinguicula moctezumae_ is described as new. It is closely related
to _P.gypsicola_ (very narrow, pointed "summer" leaves), and it occurs at
several places in the Canyon of R.Moctezuma, Mexico. It differs from _P.g._
by the broad, elliptic to obovoid corolla lobes (similar to
_P.colimensis_). The corolla is shown to be subject to considerable
variation in the same paper.
Kind regards
Jan