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'''Menyanthes''' is a monotypic genus of flowering plants in the family Menyanthaceae containing the single species Menyanthes trifoliata. The name Menyanthes 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.

{{Uses|achy Achy joints}}, {{Uses|rheumatoid Rheumatoid arthritis}}, {{Uses|scurvyScurvy}}, {{Uses|loss Loss of appetite}}, {{Uses|upset Upset stomach}}.

Diluted alkalies or acids cause it to split into a resinous product, a laevo-rotatory sugar, and a volatile, sweetish, aromatic oil, menyanthol (C7H11O2)n, which is both an aldehyde and a phenol. Contrary to some statements, it has not the odor of bitter almond oil.<ref name="chemical composition"/>

{{Leaf|Alternately|3 oblong to oval|smoothSmooth-edged or slightly toothed leaflets (2-12 cm long and 1-5 cm wide). The leaves arise on long stalks (5-30 cm) from the plant base. Wing-like appendages (stipules) are found at the base of the leaf stalks.}}<ref name="Leaf"/>