The niches flanking this tree contain statues of St. Anne and St. Joachim (father and mother of Maria) and four Franciscan doctors who wrote about the Immaculate Conception.
As fornelas que flanquean o conxunto conteñen estatuas de San Xoaquín e Santa Ana (pai e nai de María) e de catro doutores franciscanos que escribiron sobre a Inmaculada Concepción.