The stornello is an Italian verse form dating back to at least the 15th century. The most common modern interpretations list it as a tercet form in which all three lines rhyme, with hendecasyllabic lines. There are other interpretations of the form from older time periods, including a couplet form still seen in Sicily today.
The Sicilian Octave is an Italian offshoot of the older strambotto. It consists of eight lines with an alternating rhyme scheme (ABABABAB), traditionally with hendecasyllabic verse. English adaptations of the form commonly use iambic pentameter instead. The form’s popularity has waned since its introduction.
The rispetto is a 15th century Italian verse form based around two rhyming quatrains. It usually has a rhyme scheme of abab ccdd, though the second verse can vary a bit. The most defining feature of the rispetto is that it is always a poem expressing respect. In fact the name, rispetto, literally means “respect.”
Ottava rima is an Italian verse form comprised of octaves that use ten or eleven syllables per line. (Originally eleven, then reimagined as ten in English.) The form has been predominantly used for epic poetry and has a simple rhyme scheme that lends itself well to being expanded out into longer poems.
The madrigal is a category of a poem that encompasses multiple forms. While the forms are loosely connected by the idea of a short, romantic verse form, not all madrigals are short and not all madrigals are romantic. Among poetic forms, the madrigal is especially adept at evading concrete definitions.
Barzelletta was a popular verse form utilized by Italian frottola composers, intended to entertain audiences with wit and rhythm, that has only rarely been applied to poetry outside of music. It is a subgenre of the frottola, a type of music that preceded the madrigal as a popular form of Italian secular music.
An epistle or epistolary poetry is a letter in either poem or prose form. These literary letters are addressed to a particular person or group. This poem type dates back to as far as the Roman empire. From letters written during that era, it was further developed and popularized by the great Roman poets, Horace and Ovid.