Madonna and Child Surrounded by Saints (detail)

Above the painted polyptych Christ on the Cross can be seen surrounded by four angels who are catching the blood dripping from his wounds. On either side below him, St Dominic and St Francis are kneeling on the left side, and St Romuald and St Sylvester on the right. The walls show St Jerome in the desert and the martyrdom of St Sebastian. In the vault the four evangelists appear with their attributes: St Matthew with the angel, St Mark with the lion, St Luke with the ox and St John with the eagle. On the arch separating the nave Christ delivering the blessing is portrayed.