It can be distinguished from " Mimosa pudica " by its large size, large pods ( 6 to 8 cm long as opposed to 2.5 cm long ) and leaves, which have 6 to 16 pairs of pinnae as opposed to 1 to 2 pairs on " Mimosa pudica " leaves.
22.
It can be distinguished from " Mimosa pudica " by its large size, large pods ( 6 to 8 cm long as opposed to 2.5 cm long ) and leaves, which have 6 to 16 pairs of pinnae as opposed to 1 to 2 pairs on " Mimosa pudica " leaves.
23.
Building upon earlier work on plant circadian leaf movements contributed by such scientists as Jean-Jacques d'Ortous de Mairan and Henri-Louis Duhamel du Monceau, de Candolle observed in 1832 that the plant " Mimosa pudica " had a free-running period of leaf opening and closing of approximately 22 23 hours in constant light, significantly less than the approximate 24-hour period of the Earth's light-dark cycles.
24.
The first recorded observation of an endogenous circadian oscillation was by the French scientist Jean-Jacques d'Ortous de Mairan in 1729 . He noted that 24-hour patterns in the movement of the leaves of the plant " Mimosa pudica " continued even when the plants were kept in constant darkness, in the first experiment to attempt to distinguish an endogenous clock from responses to daily stimuli.
