Caltha palustris(redirected from Calthus palustris)
Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.
Related to Calthus palustris: Chelone glabra, Mentha aquatica
a toxic plant in the family Ranunculaceae; contains a vesicant substance protoanemonin. Ingestion of the plant causes stomatitis, salivation, diarrhea and abdominal pain. Called also marsh marigold, cowslip, kingcup.