Stichic
Appearance
Poetry made up of lines of the same approximate meter and length, not broken up into stanzas, is called stichic (as opposed to stanzaic, e.g.). Most poetry from the Old English period is considered stichic. Most English poetry written in blank verse, such as the epic Paradise Lost by John Milton, is stichic. A more contemporary example is Joanna Baillie's "Hay making"[1][2][3]1979
References
Look up stichic in Wiktionary, the free dictionary.