Wiktionary
marshwort
n. A small, white-flowered plant, of the genus ''Apium'', that grows in marshy habitats.
Usage examples of "marshwort".
Instead, she mixed up a poultice of marshwort, candleflax and winterwort and gently applied it to the painful-looking bump on his head.
Lhel stood waiting for him at the water's edge, surrounded by cattails and faded marshworts, just as he'd seen her earlier.