caltha palustris, known as marsh-marigold and kingcup, is a small to medium size perennial herbaceous plant of the buttercup

april bloom blooming blossom blossoming bog boggy buttercup caltha damp details ditche flower forest gold gollins green ground inundate isolated kingcup landscape leaf marginal marigold marsh may mayflower meltwater natural nature palustris petal plant pond ranunculaceae reed seasonal shrub spring stamen summer tree water wet white wild woods yellow