This rather lovely hardy perennial is Maianthemum racemosum, commonly known as false spikenard, false Solomon’s seal, etc., etc., It is also known as Smilacina racemosa. It is a member of the asparagaceae family, and is a monocot. Dies back to nothing over winter. Even before and after flowering the foliage is quite charming and the plant has the additional advantage of being tolerant of deep shade. Dappled shade in moist but well-drained soil, preferably on the acid side, is its preference.