Egyptian god of the underworld and of vegetation. Son of Nut and Geb. His birthplace was said to be Rosetau in the necropolis west of Memphis. Brother of Nephthys and Seth, and the brother and husband of Isis. Isis gave birth to Horus after his death, having impregnated herself with semen from his corpse. Osiris was depicted in human form wrapped up as a mummy, holding the crook and flail. He was often depicted with green skin, alluding to his role as a god of vegetation. He wore a crown known as the 'atef', composed of the tall conical white crown of Upper Egypt with red plumes on each side.