Lune is a fixed-form variant haiku

Haiku

' , plural haiku, is a very short form of Japanese poetry typically characterised by three qualities:* The essence of haiku is "cutting"...

 created for the English language, and consists of two versions:

The Robert Kelly lune

Robert Kelly

Robert Kelly (poet)

Robert Kelly is an American poet associated with the deep image group.-Early life and education:Kelly was born in Brooklyn, New York, to Samuel Jason and Margaret Rose Kelly née Kane, in 1935. He did his undergraduate studies at the City College of the City University of New York, graduating in 1955...

, a Professor of Literature at Bard College

Bard College

Bard College, founded in 1860 as "St. Stephen's College", is a small four-year liberal arts college located in Annandale-on-Hudson, New York.-Location:...

, invented a new form of English-language haiku

Haiku in English

Haiku in English is a development of the Japanese haiku poetic form in the English language.Contemporary haiku are written in many languages, but most poets outside of Japan are concentrated in the English-speaking countries....

 using the form 5/3/5 syllables, with the intention of making the form closer to the Japanese haiku than English-language haiku written in a 5/7/5 syllable format.

The Jack Collom lune

It is measured in words rather than syllables, making it easier for children to learn and compose. The form is 3/5/3 words. Jack Collom created this new form of haiku by chance, when he misremembered the original creation of Kelly's as this form, thereby creating a new one.

Both versions are free from all constraints associated with haiku, thus need contain no kigo

Kigo

is a word or phrase associated with a particular season, used in Japanese poetry. Kigo are used in the collaborative linked-verse forms renga and renku, as well as in haiku, to indicate the season referred to in the stanza...

 (season-word), kire

Kireji

is the term for a special category of words used in certain types of Japanese traditional poetry. It is regarded as a requirement in traditional haiku, as well as in the hokku, or opening verse, of both classical renga and its derivative renku . There is no exact equivalent of kireji in English,...

(cut), may rhyme and may use all other poetic devices.