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 art. Still, there were occasional departures into unnatural curves and artificialities that caused a shift, and "nageirebana" again revived. Until then only one branch of "ikebana" had been taught at a time, following the taste of the day, but now rival teachers in both "rikka" and "nageirebana" existed. "Rikka" reached its greatest popularity in the Genroku era, and then commenced its decline. From the decline of "rikka", "nageirebana", the origin of the present "ikebana", grew in power and popularity. From this time on, it ceased to be called "nageirebana" and took the name of "ikebana". In the Tenmei era (1781–1789)