In book publishing, an anthology is a collection of literary works chosen by the compiler; it may be a collection of plays, poems, short stories, songs or excerpts by different authors. In genre fiction, the term anthology typically categorizes collections of shorter works, such as short stories and short novels, by different authors, each featuring unrelated casts of characters and settings, and usually collected into a single volume for publication. Alternatively, it can also be a collection of selected writings (short stories, poems etc.) by one author. Complete collections of works are often called "complete works" or "opera omnia" (Latin equivalent). The word entered the English language in the 17th century, from the Greek word, ἀνθολογία (anthologic, literally "a collection of blossoms", from ἄνθος, ánthos, flower), a reference to one of the earliest known anthologies, the Garland (Στέφανος, stéphanos), the introduction to which compares each of its anthologized poets to a flower. That Garland by Meléagros of Gadara formed the kernel for what has become known as the Greek Anthology. Florilegium, a Latin derivative for a collection of flowers, was used in medieval Europe for an anthology of Latin proverbs and textual excerpts. Shortly before anthology had entered the language, English had begun using florilegium as a word for such a collection. The Palatine Anthology, discovered in the Palatine Library, Heidelberg in 1606, is a collection of Greek poems and epigrams that was based on the lost 10th Century Byzantine collection of Constantinus Cephalas, which in turn was based on older anthologies. In The Middle Ages, European collections of florilegia became popular, bringing together extracts from various Christian and pagan philosophical texts. These evolved into commonplace books and miscellanies, including proverbs, quotes, letters, poems and prayers. Songes and Sonettes, usually called Tottel's Miscellany, was the first printed anthology of English poetry.