AbstractThe sporeling development inFrullania tamarisici(L.) Dum. ssp.tamarisciis described for the first time. Its pattern belongs to theFrullania-typein which a globose, many-celled protonema is formed within the stretched exospore. The primary leaves are ovate to oblong, followed by the saccate-inflated juvenile leaves. In the juvenile stage each underleaf is associated with a single leaf.