lysimachia quadrifolia(n = noun.plant) whorled loosestrife - common North American yellow-flowered plant;
is a kind of loosestrife
genus lysimachia, lysimachia, lysimachia ciliatum, lysimachia clethroides duby, lysimachia nemorum, lysimachia nummularia, lysimachia terrestris, lysimachia vulgaris, marsilea quadrifolia, paris quadrifolia, pinus quadrifolia