Maianthemum racemosum (treacleberry, feathery false lily of the valley, false Solomon's seal, Solomon's plume or false spikenard; syn. Smilacina racemosa, Vagnera racemosa) is a species of flowering plant native to North America. It is a common, widespread plant known from every US state except Hawaii, and from every Canadian province and territory except Nunavut, as well as from Mexico. It spreads by cylindrical rhizomes up to 0.3 m (1 ft 0 in) long.