Menyanthes
Menyanthes is a monotypic genus of flowering plants in the family Menyanthaceae containing the single species Menyanthes trifoliata. The name "Menyanthes" comes from the Greek words "menyein", meaning "disclosing", and "anthos", meaning "flower", in reference to the sequential opening of flowers on the inflorescence. The North American form is often referred to as "M. trifoliata" var. "minor" Michx. It is known in English by the common names bogbean and buckbean. Characteristics. "Menyanthes trifoliata" has a horizontal rhizome with alternate, trifoliate leaves. The inflorescence is an erect raceme of white flowers. "Menyanthes trifoliata" occurs in fens and bogs in Asia , Europe, and North America. In eastern North America, it is considered to be a diagnostic fen species. It sometimes creates big quagmires with its thick roots. It has a characteristic strong and bitter taste, which can be used in schnapps. "Menyanthes trifoliata" are also known as "Sleeping herbs 睡菜" or "Herbs that calm consciousness 暝菜" in Chinese, Fossil record. One fossil seed of "Menyanthes trifoliata" has been extracted from borehole samples of the Middle Miocene fresh water deposits in Nowy Sacz Basin, West Carpathians, Poland.