" There are other herbs endowed with spontaneous movements that are not so well known, notably the Hedysareæ, among which the Hedysa­rum gyrans, or Moving-plant, acts in a very restless and surprising fashion. This little Leguminosa, which is a native of Bengal, but often cultivated in our hothouses, performs a sort of perpetual and intricate dance in hon­our of the light. Its leaves are divided into three foli­oles, one wide and terminal, the two others narrow and planted at the base of the first. Each of these leaflets is animated with a different movement of its own. They live in a state of rhythmical, almost chronometrical and continuous agitation. They are so sensitive "

― Maurice Maeterlinck , The Intelligence of Flowers