Iana (goddess) Roscher includes Iana among the "indigitamenta", the list of deities maintained by Roman priests to assure that the correct divinity was invoked for rituals. Iana (goddess) Iana is the name of an ancient Roman goddess associated with arches and the moon, usually identified as either a form of Diana or the female counterpart of Janus. Varro (1st century BC) uses the name in his agricultural treatise, in a passage of dialogue in which the interlocutors explain that some farming tasks should be done when the moon is waxing, while the waning phase facilitates others, such as harvesting, shearing sheep, and
Luna (goddess) and literature, myths of Selene are adapted under the name of Luna. The myth of Endymion, for instance, was a popular subject for Roman wall painting. Varro lists Luna among twelve deities who are vital to agriculture, as does Vergil in a different list of twelve, in which he refers to Luna and Sol as "clarissima mundi lumina", the world's clearest sources of light. Varro also lists Luna among twenty principal gods of Rome ("di selecti"). In this list, Luna is distinguished from both Diana and Juno, who also appear on it. The Romans dated the cultivation of Luna as