Every branch and flower has its own line and rhythm; it is the singular inherent quality of the material. Discovering and displaying the special qualities of each material to enhance and bring out its natural beauty is the goal of this arrangement. There are two main types of rhythmical lines. Parallel lines explore the straight vertical patterns occurring in nature, such as a stand of trees or reeds by a river. Lively Motion lines emphasize the grace and flow of materials, as when plants and trees are dancing in the wind.