Thank you so much, Don - I've only just found this - I've been away from the computer for a while. My abject apologies to Araucaria - how could I possibly have thought he'd made a mistake. I should have thought to look up rivers. Thanks again.
See other thread, its from "A Fish Called Wanda" the John Cleese film, fish don't drown, wanda sounds like wander (stray), and it is a primula, google primulas. Obscure, but Araucaria protects his theme, no rivers here.