M.CHEEK (hi Martin! Congratulations on this one!), KEW BULL.49(4):813 (1994)
COMMENT: _Pinguicula greenwoodii_ is described as new. It is related to
_P.jackii_ (bilabiate corolla, without palate, membranous, monomorphic
leaves), and it occurs in a "dripping, shaded limestone cliff in wet
montane tropical forest, 1550 m alt., about 30 km from the sea" in "Oaxaca,
Icatepec road, Mexico". It differs from _P.j._ by the much narrower
corolla, and the longer and narrower spur. In this respect (long spur),
another species comes to mind, viz. _P.imitatrix_ which also has been
collected in Oaxaca, but this seems to differ in other details & in the
habitat.
Kind regards
Jan