caltha palustris, marsh-marigold, kingcup and worm

anther axis beetle bloom blossom bog brook bug caltha ditch equagmire fen field filament floral flower flowered fresh grub hag herbaceous heyday insect kaczeniec kingcup maggot marigold marsh marshes marshland mud muddy nectar nectary ovary palustris perennial petal pistil plant ranunculaceae sepal slough spring stigma stream swamp torrent vermicule wet wildflower worm yellow