marsh marigold(n = noun.plant) caltha palustris, cowslip, kingcup, may blob, meadow bright, water dragon - swamp plant of Europe and North America having bright yellow flowers resembling buttercups;
is a kind of bog plant, marsh plant, swamp plant
is a member of caltha, genus caltha

   A perennial plant of the genus Caltha (Caltha palustris), growing in wet places and bearing bright yellow flowers. In the United States it is used as a pot herb under the name of cowslip. See Cowslip. [1913 Webster]

african marigold, aztec marigold, big marigold, bur marigold, burr marigold, burweed marsh elder, cape marigold, common marigold, corn marigold, field marigold, fig marigold, french marigold, long-billed marsh wren, marigold, marsh, marsh andromeda, marsh bellflower, marsh buggy, marsh clematis, marsh cress, marsh elder, marsh felwort, marsh fern, marsh gas, marsh gentian, marsh hare, marsh harrier, marsh hawk, marsh hen, marsh horsetail, marsh mallow, marsh milkweed, marsh orchid, marsh pea, marsh pink, marsh plant, marsh rosemary, marsh st-john's wort, marsh tea, marsh trefoil, marsh wren, ngaio marsh, perennial salt marsh aster, pot marigold, reginald marsh, salt marsh, salt marsh mallow, scotch marigold, short-billed marsh wren, sun marigold, trifid bur marigold