Bogbean is an aquatic or bog plant, hence the common name (2). The ‘bean’ part of the name refers to the smooth-edged shiny leaves, which are roughly similar in appearance to those of young broad beans (4). Each leaf is divided into three leaflets, hence the specific part of the Latin name, trifoliata, meaning ‘three leaves’. The leaves and flowers are typically raised above the surface of the water, arising from creeping root-like storage organs known as ‘rhizomes’ (2). The smooth flower stalk can grow to 30 cm. It bears numerous white delicate, feathery, and star-like flowers which have a pinkish flush on the outside of the petals (2). The alternative common name ‘bog hop’ arose from the use of the leaves as a flavouring in beer-making (5).