noun
rikka; formal upright ikebana style
A traditional, highly structured style of Japanese flower arrangement (ikebana) characterized by tall, upright compositions. Often contrasted with the simpler 生け花 (ikebana) or 投入れ (nageire) styles. The term is used as a proper noun for the style itself.
See also: 生け花
立花は、室町時代に成立した格式高い生け花の様式です。
Rikka is a formal style of ikebana that was established in the Muromachi period.
茶室
It is said that nageire suits a tea room better than rikka.
From 立 (standing, upright) + 花 (flower), referring to the tall, standing arrangement of flowers. The reading りっか is the on'yomi of the kanji.