"Argonautica Orphica" (Greek: Ὀρφέως Ἀργοναυτικά) is a Greek epic poem dating from the 5th–6th centuries CE. It is narrated in the first person in the name of Orpheus and tells the story of Jason and the Argonauts. It is not known who the real author is. The poem is found in manuscripts either on its own or together with the Orphic Hymns and other hymns such as the Homeric Hymns and those of Proclus and Callimachus. The poem was lost, but in the fifteenth century it was found and copied in a manuscript (Codex Matritensis gr. 4562) by the Neoplatonic Greek scholar Constantine Lascaris, who considered a Pythagorean Orpheus. Another related work is the Lithica (describing the properties and symbolism of different stones).