The most famous and often parodied poem by Joyce Kilmer was written in what verse structure?
Trees (poem):  Written in February 1913, it was first published in "Poetry: A Magazine of Verse" that August and included in Kilmer's 1914 collection "Trees and Other Poems". Trees (poem):  The poem, in twelve lines of rhyming couplets of iambic tetrameter verse, describes what Kilmer perceives as the inability of art created by humankind to replicate the beauty achieved by nature. Joyce Kilmer: Joyce Kilmer (born as Alfred Joyce Kilmer; December 6, 1886 – July 30, 1918) was an American writer and poet mainly remembered for a short poem titled "Trees" (1913), which was published in the collection "Trees and Other Poems" in 1914. Joyce Kilmer:  Many writers, including notably Ogden Nash, have parodied Kilmer's work and style—as attested by the many parodies of "Trees".
iambic tetrameter