CPRE Hertfordshire on Twitter: "Marsh marigolds are flowering now in shallow water and marshy places. Also known as king cups, they are usually in flower from March to May. Find more spring
King Cup Plant (Caltha palustris)
King cups hi-res stock photography and images - Alamy
Kingcup flower hi-res stock photography and images - Alamy
BBC - Gardening: Plant Finder - Kingcup
Caltha Palustris | Emerald Plants
March 10: King Cups | reddirttown
Caltha palustris | BBC Gardeners World Magazine
Flowering Kingcups or Marsh Marigolds (Caltha palustris), Stock Photo, Picture And Royalty Free Image. Pic. IBK-811711 | agefotostock
Caltha palustris Marsh Marigold Pond Marginal Plant Kingcup Bog Water Native | eBay