Wikispecies
Menyanthes f
From Ancient Greek μηνύανθος (mēnúanthos, “a water plant”), possibly from μήνη (mḗnē, “month, crescent moon”) or μηνύω (mēnúō, “to disclose”) + ἄνθος (ánthos, “flower”) in reference to the sequential opening of flowers on the inflorescence.