The external morphology as well as the differentiation and maturation of the vascular tissue of the root and initiation of lateral root in Ceratopteris thalictrcides (L.) Brongn. are studied. At maturity lcsf length is negatively correlated with leaf age. The Initial cells of all tissues of the root are present a few cells behind the apical celL The sequence of the differentiation and maturation of csch tissue is strictly constsnt. Metaxylem appears first but matures last among all of the other vascular tissues.