Ikebana room decoration and commenced in a rudimentary way to consider natural beauty in floral arrangement. At this time "ikebana" was known as "rikka". This same age conceived another form called "nageirebana". "Rikka" and "nageirebana" are the two branches into which "ikebana" has been divided. Popularity of the two styles vacillated between these two for centuries. In the beginning, "rikka" was stiff, formal, and more decorative while "nageirebana" was simpler and more natural. Although "nageirebana" began to come into favour in the Higashiyama period, "rikka" was still preferred, and "nageirebana" did not truly gain popularity until the Momoyama period, about a
Ikebana who conceived the idea of representing the three elements of heaven, human, and earth, from which have grown the principles of the arrangements used today. It was at Yoshimasa's Silver Pavilion in Kyoto, where the art of "cha-no-yu", the tea ceremony, and "ko-awase", the incense ceremony, may be said to have been evolved that the art of "ikebana" received its great development. Artists of the Kanō school such as Sesshū Tōyō (1420–1506), Sesson, Kanō Masanobu, Kanō Motonobu (1476–1559), and Shugetsu of the 16thcentury were lovers of nature, so that "ikebana" advanced in this period a step further than temple and