Jimscott,
Pinguicula moranensis is a valid species name, but the "var. superba" is not, therefore I recommend treating it as a descriptor phrase by placing it in parentheses, e. g. Pinguicula moranensis (superba).
Corey,
Until just recently it was correct in cultivar terminology to use either; Pinguicula 'Sethos' or Pinguicula cv. Sethos. Presently only the former is correct terminology. I guess they are trying to narrow down our options, less chance of getting it wrong, or more, depending on your perspective.