Zappai
Zappai is a form of Japanese poetry rooted in haikai. It is related to, but separate from, haiku and senryū. Lee Gurga defines zappai as a form of poetry that "includes all types of seventeen syllable poems that do not have the proper formal or technical characteristics of haiku." The Haiku [Society of America] mentioned zappai while defining similar forms though their comments were later rebutted by Richard Gilbert and Shinjuku Rollingstone.