Branch or impulse one calls usually, perpendicularly upward rising up or also the soil pressed in slightly parts of a plant growing aboveground. Rung consist of the branch axle, also or (in verholztem condition) trunk, and the sheets. The branch axle is the rod-shaped part, in which in the majority of the cases the guidance bundles are to the water pipeline and to sugar transport. It consists of several sections, which Internodien, which by thickened places, which are knots or Nodien, from each other defined. At the knots distantly laterally the sheets sit from the branch axle.