Isso mesmo. Eu que não li com atenção o comentário da descrição da espécie.

N: $[Pinguicula ' Weser ' {Hort.Slack}]
P: Insect-Eat.Pl. & How to Grow Them:113 (1986)
S: =[[Pinguicula moranensis {H.B.K.}] * [Pinguicula ehlersiae {Speta & Fuchs}]]
B: H.Weiner, Hameln, 1981
Nominant: H.Weiner
Registrant: A.Slack
C: simultaneous synonym of [Pinguicula ' Sethos ' {Hort.Slack}]
HC: Registered 10. 11. 1998 {JS}
Description: Insect-Eat.Pl. & How to Grow Them:113 (1986)
"Of these (hybrids) I would mention [Pinguicula ' Sethos ' {Hort.Slack}] ([[Pinguicula moranensis {H.B.K.}] * [Pinguicula ehlersiae {Speta & Fuchs}]]), a fine, very floriferous clone with large orchid-purple flowers with a many-rayed mouth like a white star; [Pinguicula ' Weser ' {Hort.Slack}], of the same parentage and with rather simiar flowers, has a solitary white streak down the central lower lobe and dark veins."
Standard: Insect-Eat.Pl. & How to Grow Them:114 (1986)
Etymology: after the river at originator's locality
image: pinguicu/pxweser: flowering plant
image: Check Bob Ziemer's Photo Finder